bog
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C1 noun /bɒɡ/

bog

pantano
Meaning
an area of wet, spongy ground; a swamp or marsh
Example
The hikers got stuck in a bog.
Los excursionistas se quedaron atrapados en un pantano.
B1 noun /bɪˈliːf/

Belief

creencia; confianza
Meaning
confidence in the truth or existence of something; trust or faith
Example
His belief in justice never wavered.
Su creencia en la justicia nunca vaciló.
A1 verb /bʌt/

but

dar un cabezazo
Meaning
to hit or push with the head or horns; to strike forcefully
Example
The goat butted against the fence.
La cabra dio un cabezazo contra la cerca.
B2 noun ˈbleɪzə

blazer

blazer
Meaning
A coloured jacket worn by members of a club, team, or school as part of a uniform.
Example
He looked sharp in his navy blue blazer at the event.
Él lucía elegante en su blazer azul marino en el evento.
C1 noun /ˈbenɪˌfæktər/

Benefactor

benefactor; patrón; donante
Meaning
a person who gives money or other help to support a person or cause; a patron
Example
The anonymous benefactor donated millions to the hospital.
El benefactor anónimo donó millones al hospital.
C2 adjective /ˈbɪloʊɪŋ/

billowing

ondeando
Meaning
Describing something that swells or surges outward in waves or large masses.
Example
She walked through the billowing curtains.
Ella caminó a través de las cortinas ondeando.
C2 noun /ˈbiːlaɪn/

beeline

línea recta
Meaning
a straight, direct route to a destination
Example
He made a beeline for the food table as soon as he entered the party.
Hizo una línea recta hacia la mesa de comida tan pronto como entró a la fiesta.
C2 adjective /ˈbɑː.bər.əs/

Barbarous

bárbaro; cruel; salvaje
Meaning
extremely cruel; uncivilized; savage
Example
The barbarous treatment of prisoners was condemned by human rights organizations.
El trato bárbaro a los prisioneros fue condenado por las organizaciones de derechos humanos.
C2 noun /ˈbroʊmaɪd/

bromide

idea trillada
Meaning
A trite or unoriginal idea or remark; also a chemical compound of bromine.
Example
His speech was full of old bromides about hard work.
Su discurso estaba lleno de viejas ideas trilladas sobre el trabajo duro.
A2 adjective /breɪv/

brave

valiente
Meaning
showing courage in the face of danger or difficulty
Example
The brave firefighter rushed into the burning building.
El valiente bombero corrió hacia el edificio en llamas.
C2 adjective /ˈbʌlbəs/

bulbous

abultado / redondeado
Meaning
Bulging, round, or swollen in shape; resembling a bulb.
Example
The frog had a bulbous nose and big eyes.
La rana tenía una nariz abultada y ojos grandes.
C2 noun /bɛk/

beck

gesto de llamada / arroyo pequeño
Meaning
a gesture of beckoning; a small stream or brook (chiefly Northern English)
Example
The servant came at his master's beck and call.
El sirviente vino al llamado de su amo.
B2 noun /bɪˈtreɪəl/

Betrayal

traición; deslealtad
Meaning
the action of betraying one's country, group, or person; disloyalty
Example
His betrayal of their friendship hurt her deeply.
Su traición a su amistad le dolió profundamente.
B2 verb /bræɡ/

brag

presumir
Meaning
to talk proudly about oneself or one's achievements in an annoying way
Example
He always brags about his expensive car.
Él siempre presume de su coche caro.
B2 noun; verb /breɪs/

brace

soporte; prepararse
Meaning
a device that supports or strengthens something; to prepare mentally or physically for something difficult
Example
She braced herself for the strong wind.
Ella se preparó para el viento fuerte.
A1 adjective /braʊn/

Brown

marrón
Meaning
having the color of earth or wood; dark colored
Example
She has beautiful brown eyes that sparkle in the sunlight.
Ella tiene hermosos ojos marrones que brillan bajo la luz del sol.
C1 noun /ˈblɛm.ɪʃ/

blemish

imperfección
Meaning
A small mark or flaw that spoils the appearance of something.
Example
The mirror had a small blemish on the surface.
El espejo tenía una pequeña imperfección en la superficie.
C2 verb /ˈblʌstər/

bluster

presumir
Meaning
to speak loudly in an aggressive or threatening way, often without real power
Example
The manager blustered about firing people but did nothing.
El gerente presumió sobre despedir a las personas, pero no hizo nada.
A1 noun /ˈbʌt.ər/

Butter

mantequilla
Meaning
a pale yellow edible fatty substance made by churning cream
Example
He spread butter on his toast for breakfast.
Él untó mantequilla en su tostada para el desayuno.
B2 noun ˈbaɪ.əʊˌfjuː.əl

biofuel

biocombustible
Meaning
A fuel derived immediately from living matter, as opposed to fossil fuels derived from long-dead biological matter.
Example
Biofuels reduce dependence on conventional energy sources.
Los biocombustibles reducen la dependencia de fuentes de energía convencionales.
A2 noun /ˈbæskɪt/

basket

cesta
Meaning
a container made of woven materials used for carrying or storing things
Example
She carried the apples in a basket.
Ella llevó las manzanas en una cesta.
B2 verb /bɪˈtreɪ/

betray

traicionar
Meaning
to be disloyal to; to reveal secrets
Example
He felt betrayed by his closest friend.
Él se sintió traicionado por su amigo más cercano.
C1 noun /bʌm/

bum

trasero
Meaning
informal term for the buttocks; also a homeless or lazy person
Example
He sat on his bum all day doing nothing.
Estuvo sentado en su trasero todo el día sin hacer nada.
C2 noun /ˈbrɪɡ.ənd/

brigand

bandido
Meaning
A member of a gang that ambushes and robs people in forests or mountains; a bandit.
Example
The travelers were attacked by brigands in the mountains.
Los viajeros fueron atacados por bandidos en las montañas.
B2 noun ˈbluː.prɪnt

blueprint

plano detallado
Meaning
A detailed plan or framework for a work or project, a pre-planned structure.
Example
The architect presented a blueprint for the new building.
El arquitecto presentó un plano detallado para el nuevo edificio.
C1 noun /bəˈtæljən/

battalion

batallón
Meaning
A large body of soldiers ready for battle, typically consisting of several companies.
Example
The battalion was deployed to the front line.
El batallón fue desplegado a la línea del frente.
C1 noun /bəˈbuːn/

Baboon

babuino
Meaning
a large African and Arabian primate with a dog-like snout and colorful buttocks
Example
The baboon troop gathered around the watering hole in the savanna.
El grupo de babuinos se reunió alrededor del agujero de agua en la sabana.
C2 noun /ˈbʌɡəˌbuː/

bugaboo

fantasma / temor
Meaning
An object of fear or worry; an imagined cause of anxiety.
Example
The threat of inflation became a political bugaboo.
La amenaza de la inflación se convirtió en un bugaboo político.
B2 adjective /bɪˈheɪvjərəl/

behavioral

comportamental
Meaning
relating to the way a person or animal acts
Example
The psychologist studied the child's behavioral patterns.
El psicólogo estudió los patrones de comportamiento del niño.
B1 noun /ˈbɜː.nɪŋ/

burning

quemadura
Meaning
The process of combustion of inflammable materials producing heat and light and (typically) smoke.
Example
Burning garbage exacerbates air pollution.
Quemar basura aumenta la contaminación del aire.
C2 adjective /bɪˈhoʊldən/

beholden

agradecido o en deuda
Meaning
indebted or obliged to someone for a service or help
Example
He felt beholden to his mentor for all the guidance.
Se sentía agradecido con su mentor por toda la orientación.
C2 noun /ˌbenɪˈdɪkʃən/

Benediction

bendición
Meaning
a blessing, especially a ceremonial one; an expression of good wishes
Example
The priest gave his benediction to the newlyweds.
El sacerdote dio su bendición a los recién casados.
B2 noun /bʌd/

Bud

capullo
Meaning
An undeveloped or immature flower before it opens
Example
The rose bud will bloom into a beautiful flower in a few days.
El capullo de rosa se convertirá en una hermosa flor en unos pocos días.
C2 verb /ˈbɪloʊ/

billow

surgir como olas
Meaning
To swell or rise in large waves or surges; to flow outward in a rolling motion.
Example
Smoke billowed from the burning building.
El humo surgió como olas desde el edificio en llamas.
B2 noun, verb /blæst/

blast

explosión, fuerte golpe
Meaning
a strong gust of wind, an explosion, or a loud sound; to destroy or shatter by explosion
Example
The explosion sent a powerful blast through the building.
La explosión envió un fuerte golpe a través del edificio.
C2 noun /ˈbʊljən/

bullion

oro o plata en bruto
Meaning
Gold or silver in bulk before being coined or made into jewelry.
Example
The bank stores gold bullion in its vaults.
El banco guarda oro en bruto en sus bóvedas.
C2 noun /briːtʃ/

breech

La parte posterior del cañón de un arma; la posición de un bebé en el útero donde los glúteos o los pies salen primero al nacer.
Meaning
The back part of a gun barrel; a position of a baby in the womb where the buttocks or feet come out first at birth.
Example
The rifle was loaded through the breech.
El rifle fue cargado a través de la culata.
B2 adjective /ˈbruː.təl/

brutal

brutal
Meaning
extremely cruel or harsh; violent and without feeling
Example
The dictator’s rule was marked by brutal violence.
El gobierno del dictador estuvo marcado por una violencia brutal.
A1 noun /ˈbrʌðər/

brother

hermano
Meaning
a male sibling
Example
My brother is two years older than me.
Mi hermano tiene dos años más que yo.
C1 noun /blɜːrb/

blurb

descripción promocional
Meaning
a short promotional description of a book, product, or service
Example
The back cover had a blurb praising the novel.
La contraportada tenía una descripción promocional elogiando la novela.
B2 interjection /ˈbrɑː.voʊ/

bravo

bravo
Meaning
used to express approval, admiration, or praise
Example
The audience shouted 'Bravo!' after the stunning performance.
La audiencia gritó '¡Bravo!' después de la impresionante actuación.
B2 verb /blʌf/

bluff

engañar
Meaning
to deceive someone by pretending to have strength, knowledge, or resources that one does not actually possess
Example
He tried to bluff his way into the exclusive club.
Él trató de hacer un bluff para entrar al club exclusivo.
A2 adverb /bɪˈjɒnd/

Beyond

más allá; fuera de los límites establecidos;
Meaning
further away than; exceeding; more than
Example
The mountains stretched beyond the horizon.
Las montañas se extendían más allá del horizonte.
A1 adjective /ˈbɔːrɪŋ/

boring

aburrido
Meaning
not interesting or exciting; dull.
Example
The lecture was so boring that several students fell asleep.
La conferencia fue tan aburrida que varios estudiantes se quedaron dormidos.
A1 noun /bʌs/

Bus

autobús
Meaning
a large motor vehicle carrying passengers by road
Example
I take the bus to work every morning.
Yo tomo el autobús al trabajo cada mañana.
C1 noun /braɪn/

brine

agua salada
Meaning
Water saturated with salt, often used for preserving food.
Example
The olives were stored in brine to keep them fresh.
Las aceitunas se guardaron en agua salada para mantenerlas frescas.
B2 adjective /ˈbleɪzɪŋ/

Blazing

ardiente; resplandeciente
Meaning
burning fiercely; extremely hot; very bright
Example
The blazing sun made the day extremely hot.
El sol ardiente hizo que el día fuera extremadamente caluroso.
C1 noun /ˈbɪɡətri/

bigotry

intolerancia
Meaning
Intolerance toward those who hold different opinions or lifestyles.
Example
Her bigotry prevented her from accepting people with different beliefs.
Su intolerancia le impidió aceptar a personas con creencias diferentes.
C2 noun ˌbaɪ.oʊ.əˈveɪ.lə.bɪl.ə.ti

bioavailability

capacidad de absorción del cuerpo
Meaning
The degree to which a substance can be absorbed and used by the body.
Example
Turmeric's bioavailability increases when consumed with black pepper.
La biodisponibilidad de la cúrcuma aumenta cuando se consume con pimienta negra.
A2 adjective /ˈbrɪtɪʃ/

british

británico
Meaning
relating to Great Britain or its people
Example
She loves British culture and traditions.
A ella le encanta la cultura y las tradiciones británicas.
A1 noun /ˈbɜːrθ.deɪ/

birthday

Meaning
the anniversary of the day on which a person was born, typically celebrated annually
Example
We are planning a surprise birthday party for her.
C2 noun /bjuːt/

butte

butte
Meaning
an isolated hill with steep sides and a flat top, common in arid regions
Example
The travelers could see a tall butte rising in the desert.
Los viajeros pudieron ver un butte alto elevándose en el desierto.
C2 verb /ˈbraʊˌbiːt/

browbeat

intimidar / coaccionar
Meaning
To intimidate or bully someone into doing something
Example
The lawyer tried to browbeat the witness.
El abogado intentó intimidar al testigo.
C2 verb /ˈbɜːrdʒən/

burgeon

crecer rápidamente
Meaning
To grow or develop rapidly; to flourish.
Example
The city's population began to burgeon after the new factory opened.
La población de la ciudad comenzó a crecer rápidamente después de la apertura de la nueva fábrica.
C1 adjective /bəˈnɑːl/ or /ˈbeɪnəl/

banal

común
Meaning
Lacking originality; boringly obvious and commonplace.
Example
His speech was full of banal clichés.
Su discurso estaba lleno de clichés comunes.
B1 adverb /bɪˈniːθ/

Beneath

debajo; bajo
Meaning
under; below; underneath
Example
The treasure lies beneath the old tree.
El tesoro yace debajo del árbol viejo.
A2 adverb /ˈbædli/

badly

malamente
Meaning
in a way that is not good; poorly or severely
Example
He performed badly in the exam.
Él hizo un mal desempeño en el examen.
C1 noun /ˈbeɪlɪf/

bailiff

oficial de la corte
Meaning
An official who keeps order in a court, carries out court orders, or collects debts.
Example
The bailiff asked everyone to rise as the judge entered the courtroom.
El oficial de la corte pidió a todos que se pusieran de pie cuando el juez entró a la sala.
B2 verb /ˈbjuːtɪfaɪ/

beautify

embellecer
Meaning
to make something more beautiful or attractive
Example
The city plans to beautify the old park with trees and lights.
La ciudad planea embellecer el parque antiguo con árboles y luces.
C2 adjective, noun /bɪˈtroʊðd/

betrothed

prometido
Meaning
Engaged to be married; a person who is engaged.
Example
She introduced him as her betrothed.
Ella lo presentó como su prometido.
C1 noun /ˈbreɪkər/

breaker

disyuntor (algo que rompe, una ola grande que se rompe cerca de la orilla, o un dispositivo que interrumpe un circuito eléctrico)
Meaning
A person or thing that breaks something; a large sea wave that breaks into foam near the shore; a device that interrupts an electric circuit.
Example
The breaker tripped during the storm, cutting off electricity.
El disyuntor se disparó durante la tormenta, cortando la electricidad.
B2 noun /bleɪd/

Blade

cuchilla
Meaning
a sharp flat cutting edge of a knife, sword, or tool
Example
The blade of the knife needs to be sharpened.
La hoja del cuchillo necesita ser afilada.
A1 preposition, adverb /bɪˈtwiːn/

between

entre
Meaning
at, into, or across the space separating two objects or regions
Example
She sat between her two friends.
Ella se sentó entre sus dos amigos.
B2 adjective /bəˈtænɪkəl/

botanical

botánico
Meaning
relating to plants or plant life
Example
She works at the botanical garden.
Ella trabaja en el jardín botánico.
A2 noun /bɪl/

Bill

pico
Meaning
the beak of a bird, especially when it is broad and flat
Example
The duck used its bill to filter food from the water.
El pato usó su pico para filtrar comida del agua.
C1 adjective /ˈbaɪtɪŋ/

Biting

mordiendo; frío intenso; crítico agudo o áspero
Meaning
extremely cold; sharply critical or harsh
Example
The biting cold made everyone shiver.
El frío mordaz hizo que todos temblaran.
C2 adjective /ˈbeɪnfəl/

baneful

perjudicial
Meaning
Causing harm, ruin, or destruction; deadly or poisonous.
Example
His baneful influence ruined the community.
Su influencia perjudicial arruinó la comunidad.
C1 noun /ˈbaɪoʊˌsfɪr/

Biosphere

biósfera
Meaning
the regions of the surface and atmosphere of the earth occupied by living organisms
Example
Climate change is affecting the entire biosphere.
El cambio climático está afectando a toda la biósfera.
B2 noun /ˈbɒt.əl.nek/

bottleneck

cuello de botella
Meaning
Narrow path or obstruction, a place or situation where flow becomes slow.
Example
The narrow bridge is a major bottleneck during rush hour.
El puente estrecho es un gran cuello de botella durante la hora punta.
B1 noun /ˈbæɡɪdʒ/

Baggage

equipaje; pertenencias personales;
Meaning
suitcases and bags containing personal belongings; past experiences or problems that affect behavior
Example
Please collect your baggage from the conveyor belt at the airport.
Por favor, recoja su equipaje en la cinta transportadora en el aeropuerto.
B2 noun/verb /bʌst/

bust

busto/romper
Meaning
As a noun: A sculpture of a person's head, shoulders, and chest; As a verb: To break, smash, or arrest.
Example
The police busted the gang last night.
La policía arrestó a la banda anoche.
C2 verb /bɪˈdaɪzən/

bedizen

adorno ostentoso
Meaning
to dress up or decorate in a showy or tasteless way
Example
She was bedizened with cheap jewelry.
Ella estaba adornada con joyas baratas.
B2 noun /ˈbel.i/

Belly

barriga
Meaning
the front part of the human trunk below the ribs, containing the stomach and bowels; abdomen
Example
The baby kicked in her belly during pregnancy.
El bebé pateó en su barriga durante el embarazo.
A2 preposition /bɪˈsaɪd/

beside

al lado de
Meaning
next to or at the side of someone or something
Example
She sat beside her best friend during the ceremony.
Ella se sentó al lado de su mejor amiga durante la ceremonia.
B2 verb /ˈbætər/

batter

golpear repetidamente
Meaning
To strike repeatedly with force.
Example
The waves battered the shoreline all night.
Las olas golpearon la orilla toda la noche.
B1 noun /bɑːm/

Bomb

bomba
Meaning
an explosive device designed to cause damage or destruction
Example
The bomb disposal unit carefully defused the explosive device.
La unidad de desactivación de bombas desactivó cuidadosamente el dispositivo explosivo.
B2 noun, verb /bluːm/

bloom

florecer
Meaning
to produce flowers; to develop or flourish; a flower or the state of flowering
Example
The roses bloom beautifully every spring.
Las rosas florecen bellamente cada primavera.
C2 noun /bɪsk/

bisque

sopa de mariscos
Meaning
A rich, creamy soup made from shellfish.
Example
We ordered lobster bisque at the restaurant.
Pedimos bisque de langosta en el restaurante.
A1 adjective /bɛst/

best

mejor
Meaning
Of the highest quality, excellence, or standing.
Example
She is the best student in the class.
Ella es la mejor estudiante de la clase.
B1 noun /bloʊ/

Blow

golpe; un golpe fuerte con la mano, un arma o un objeto duro
Meaning
a powerful stroke with a hand, weapon, or hard object
Example
The boxer delivered a devastating blow to his opponent.
El boxeador dio un golpe devastador a su oponente.
C2 noun /ˈbriːtʃɪz/

Breeckes

pantalones cortos hasta la rodilla
Meaning
knee-length trousers; short pants
Example
He wore riding breeches for the equestrian event.
Él usó pantalones cortos hasta la rodilla para el evento ecuestre.
A2 noun /ˈbraʊzər/

browser

navegador
Meaning
a software application for accessing information on the World Wide Web.
Example
I use a web browser to search for information online.
Uso un navegador web para buscar información en línea.
B2 noun /ˈbiː.təl/

Beetle

escarabajo
Meaning
a hard-bodied insect with wing covers
Example
The black beetle scurried across the garden path.
El escarabajo negro corrió por el camino del jardín.
C2 noun /beɪz/

baize

un tipo de tela gruesa de lana
Meaning
A type of coarse woolen cloth, often green, used for covering tables such as billiard tables.
Example
The old card table was covered with worn baize.
La vieja mesa de cartas estaba cubierta con baize desgastado.
B1 noun /bɪˈhɑːf/

behalf

en nombre de
Meaning
as a representative of someone; in the interest of someone
Example
She accepted the award on behalf of her team.
Ella aceptó el premio en nombre de su equipo.
A1 noun /bæk/

Back

espalda
Meaning
the rear surface of the human body from the shoulders to the hips; the spine
Example
She hurt her back while lifting heavy boxes.
Ella se lastimó la espalda mientras levantaba cajas pesadas.
C2 adjective /bɪˈfʌdld/

befuddled

desconcertado
Meaning
confused, unable to think clearly
Example
He looked befuddled after hearing the complex instructions.
Él se veía desconcertado después de escuchar las instrucciones complejas.
B2 noun /ˈbærəl/

barrel

barril grande
Meaning
a large cylindrical container used to hold liquids
Example
The wine was stored in a wooden barrel.
El vino se almacenó en un barril de madera.
B1 noun /bɪərd/

Beard

barba
Meaning
hair that grows on the chin and lower cheeks of a man's face
Example
He grew a long beard during the winter months.
Él dejó crecer una barba larga durante los meses de invierno.
A1 adjective /bæd/

bad

malo
Meaning
not good; unpleasant, harmful, or of poor quality
Example
The milk smells bad, so don’t drink it.
La leche huele mal, así que no la bebas.
C1 noun /bɒmˈbɑːrdmənt/

bombardment

bombardeo
Meaning
a continuous attack with bombs or other projectiles
Example
The city endured a heavy bombardment during the war.
La ciudad soportó un fuerte bombardeo durante la guerra.
C2 adjective /ˌbækəˈneɪliən/

bacchanalian

relacionado con la embriaguez
Meaning
Characterized by or involving drunken revelry.
Example
The students threw a bacchanalian party after the exams.
Los estudiantes organizaron una fiesta relacionada con la embriaguez después de los exámenes.
B2 adjective /beər/

Bare

desnudo; descubierto; vacío; mínimo
Meaning
naked; uncovered; empty; minimal
Example
The bare walls of the room needed some decoration.
Las paredes desnudas de la habitación necesitaban algo de decoración.
C2 noun /ˈbrɪk.bæt/

Brickbat

un pedazo de ladrillo; crítica severa o censura
Meaning
a piece of brick, especially one used as a missile; harsh criticism or censure
Example
The angry protesters threw brickbats at the building windows.
Los manifestantes enfadados arrojaron ladrillos a las ventanas del edificio.
B2 noun /biːm/

beam

rayo / viga
Meaning
a ray or shaft of light; a long piece of wood or metal used to support weight
Example
A beam of sunlight entered through the window.
Un rayo de luz entró por la ventana.
B1 verb /bæn/

ban

prohibir
Meaning
to officially forbid something; to prohibit
Example
The government banned smoking in public places.
El gobierno prohibió fumar en lugares públicos.
B2 noun /ˈbænər/

banner

cartel
Meaning
a large printed sign used for advertisements or announcements
Example
The company displayed a banner to advertise their new product.
La empresa mostró un cartel para anunciar su nuevo producto.
B2 noun, verb /ˈbʌŋkər/

bunker

búnker
Meaning
a reinforced underground shelter; to place or store something in a protected place
Example
They hid in a bunker during the air raid.
Se escondieron en un búnker durante el ataque aéreo.
C1 verb /bɪˈɡrʌdʒ/

begrudge

resentir a alguien por tener algo / dar algo de mala gana
Meaning
to resent someone for having something; to give reluctantly
Example
She did not begrudge him his success.
Ella no le guardó rencor por su éxito.
B2 adverb /ˈbɪt.ə.li/

Bitterly

amargamente; severamente
Meaning
in an angry, hurt, or resentful way; extremely; severely
Example
She complained bitterly about the unfair treatment.
Ella se quejó amargamente del trato injusto.
C1 verb /ˈbɑːrtər/

barter

trueque
Meaning
To exchange goods or services without using money.
Example
They bartered their crops for handmade tools.
Intercambiaron sus cultivos por herramientas hechas a mano.
B2 verb /ˈbrɔːdən/

broaden

ampliar
Meaning
to make wider or larger in scope; to expand ideas, experience, or understanding
Example
Travel can broaden your perspective on different cultures.
Viajar puede ampliar tu perspectiva sobre diferentes culturas.
C1 noun /ˈbɑːr.tər ˌsɪs.təm/

barter system

sistema de intercambio
Meaning
A system of exchange where goods and services are traded directly without using money.
Example
Ancient civilizations used the barter system for trade.
Las civilizaciones antiguas usaban el sistema de intercambio para el comercio.
C2 noun /boʊl/

boll

cápsula redonda de semillas (como las de algodón o lino)
Meaning
The rounded seed capsule of plants such as cotton or flax.
Example
The farmer examined the cotton boll to check its quality.
El agricultor examinó el bol de algodón para verificar su calidad.
C2 adjective /baɪˈɛniəl/

biennial

bienal
Meaning
happening every two years
Example
The biennial festival attracts thousands of visitors.
El festival bienal atrae a miles de visitantes.
C2 verb /baɪd/

bide

esperar
Meaning
to wait patiently for the right time or opportunity
Example
He decided to bide his time before making a move.
Decidió esperar su tiempo antes de hacer un movimiento.
C1 noun /ˈbɛərnəs/

bareness

desnudez
Meaning
the state of being bare or uncovered; lack of decoration, warmth, or concealment
Example
The bareness of the room made it feel cold and unwelcoming.
La desnudez de la habitación la hacía sentir fría y poco acogedora.
A2 verb /bæt/

bat

golpear con un bate
Meaning
to hit with a bat; to flutter eyelids
Example
She bats her eyelashes flirtatiously.
Ella bate sus pestañas coquetamente.
B1 verb /briːð/

breathe

respirar
Meaning
To take air into the lungs and send it out again.
Example
It was hard to breathe in the smoky room.
Fue difícil respirar en la habitación llena de humo.
C1 adjective /bəˈlɪdʒ.ər.ənt/

belligerent

beligerante o agresivo
Meaning
Hostile and aggressive, ready to fight or argue.
Example
His belligerent attitude often leads to conflicts.
Su actitud beligerante a menudo conduce a conflictos.
C2 noun /ˌbɪbliəʊˈmeɪniə/

bibliomania

bibliomanía
Meaning
An extreme obsession with collecting or possessing books.
Example
His bibliomania led him to fill every room with books.
Su bibliomanía lo llevó a llenar cada habitación con libros.
B2 noun /ˈbɪtərnəs/

Bitterness

amargura
Meaning
anger and disappointment at being treated unfairly; resentment; a sharp, unpleasant taste
Example
She spoke with bitterness about her former employer.
Ella habló con amargura sobre su antiguo empleador.
B2 noun breɪn ˈtreɪ.nɪŋ

brain-training

entrenamiento cerebral
Meaning
Mental exercises designed to improve cognitive functions, memory retention, and overall brain performance.
Example
Regular brain-training can improve memory retention.
El entrenamiento cerebral regular puede mejorar la retención de la memoria.
B2 noun/verb /briːtʃ/

breach

violación
Meaning
A violation or breaking of a law, agreement, or code of conduct; an act of breaking or failing to observe a law, agreement, or code of conduct.
Example
The company faced a breach of data security.
La empresa sufrió una violación de seguridad de datos.
A2 noun /ˈblæŋ.kɪt/

Blanket

manta
Meaning
a large piece of woolen or similar material used as a covering for warmth
Example
She wrapped herself in a warm blanket on the cold night.
Ella se envolvió en una manta cálida en la fría noche.
C1 noun /bɪz/

Biz

negocios
Meaning
business (informal); commercial enterprise or activity
Example
He's been in the restaurant biz for twenty years.
Ha estado en el negocio de los restaurantes durante veinte años.
C2 noun /ˈbrɛviˌɛri/

breviary

libro de oraciones
Meaning
A book containing the service for each day, used in Christian liturgy.
Example
The monk read from the breviary during morning prayers.
El monje leyó del libro de oraciones durante las oraciones matutinas.
B2 adjective /bliːk/

bleak

desolado
Meaning
cold, miserable, or without hope
Example
The future seemed bleak after the economic downturn.
El futuro parecía desolado después de la recesión económica.
C1 adjective /ˈbreɪzən/

brazen

descarado
Meaning
Bold and without shame; shameless.
Example
She made a brazen attempt to lie in front of everyone.
Ella hizo un intento descarado de mentir frente a todos.
B1 noun /ˈbɔr.dər/

Border

frontera
Meaning
a line separating two political or geographical areas, especially countries
Example
They crossed the border between France and Spain by train.
Cruzaron la frontera entre Francia y España en tren.
B1 noun /bɪˈheɪ.vjər/

Behaviour

comportamiento
Meaning
the way a person or animal acts or conducts themselves
Example
His behaviour at the meeting was very professional.
Su comportamiento en la reunión fue muy profesional.