braze
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C2 verb /breɪz/

braze

ブレイズ
Meaning
To join two pieces of metal by heating and melting a filler metal into the joint.
Example
The mechanic brazed the broken pipe to fix the leak.
メカニックは壊れたパイプを溶接して漏れを修理しました。
C2 adjective /ˈbɔːlki/

balky

頑固
Meaning
difficult, uncooperative, or stubborn
Example
The balky printer refused to work when needed most.
頑固なプリンターは最も必要な時に動作を拒否しました。
B2 noun /bluːz/

blues

ブルース
Meaning
a feeling of sadness; a style of music with melancholy themes
Example
Listening to blues music always calms him down.
ブルース音楽を聴くと、いつも彼を落ち着かせる。
B1 adjective /ˈblʌdi/

bloody

血まみれ
Meaning
covered in, involving, or containing blood; also used informally for emphasis in British English.
Example
The soldier returned from battle with a bloody arm.
兵士は戦いから血まみれの腕で帰還しました。
C2 noun /ˌbeɪˈliː/

bailee

受寄者
Meaning
a person or party who temporarily receives possession of goods or property from another under a legal agreement
Example
The bailee must take reasonable care of the goods while they are in his possession.
受寄者は財産を適切に管理する義務がある。
A1 adjective /braʊn/

Brown

茶色
Meaning
having the color of earth or wood; dark colored
Example
She has beautiful brown eyes that sparkle in the sunlight.
彼女は太陽の光で輝く美しい茶色の目を持っています。
C1 verb /bɒtʃ/

botch

失敗する
Meaning
to carry out a task badly or carelessly
Example
He completely botched the repair job.
彼は修理の仕事を完全に失敗させた。
A1 adjective /ˈbɪzi/

busy

忙しい
Meaning
actively engaged in work or activity; occupied
Example
He is too busy to answer the phone.
彼は電話に出るのがあまりにも忙しい。
C1 adjective /bəˈroʊk/

baroque

バロック様式
Meaning
relating to a highly ornate and extravagant style of art, architecture, or music from the 17th and early 18th centuries; excessively elaborate or complex
Example
The church was decorated in a baroque style with intricate details.
教会はバロック様式で複雑な詳細で飾られていました。
A2 verb /blɒk/

block

ブロックする
Meaning
to obstruct; to prevent passage or progress
Example
The fallen tree blocks the road.
倒れた木が道路をブロックしています。
A2 noun, verb /bɑːr/

bar

バー, ブロックする
Meaning
a counter where drinks are served; to prevent or block
Example
They decided to meet at the bar after work.
仕事の後、バーで会うことに決めました。
C1 adjective, noun /ˈbʊrʒ.wɑː/

bourgeois

ブルジョア
Meaning
Relating to the middle class, often with materialistic values or conventional attitudes.
Example
The novel criticizes the bourgeois lifestyle of the city dwellers.
その小説は都市住民のブルジョア生活様式を批判している。
B2 noun /brum/

Broom

ほうき
Meaning
a long-handled brush of bristles or twigs, used for sweeping
Example
She used an old broom to sweep the fallen leaves from the porch.
彼女は古いほうきを使って、ポーチから落ちた葉を掃きました。
B2 noun /ˈbætʃələr/

Bachelor

独身男性; 大学の学位を持つ人
Meaning
an unmarried man; a person who holds a first degree from a university
Example
He remained a bachelor all his life and earned a bachelor's degree in engineering.
彼は一生独身で、工学の学位を取得しました。
C2 adjective /ˈbʊərɪʃ/

boorish

粗野
Meaning
Rude, insensitive, and lacking manners or refinement.
Example
His boorish behavior ruined the dinner party.
彼の粗野な行動はディナーパーティーを台無しにした。
A1 conjunction /bɪˈkɔːz/

because

だから
Meaning
for the reason that; since
Example
He stayed home because it was raining.
彼は雨が降っていたので家にいた。
B2 noun /ˈbɒt.əl.nek/

bottleneck

ボトルネック
Meaning
Narrow path or obstruction, a place or situation where flow becomes slow.
Example
The narrow bridge is a major bottleneck during rush hour.
狭い橋はラッシュアワーの間、主要なボトルネックです。
C1 noun /ˈbed sted/

Bed stead

ベッドフレーム
Meaning
the framework of a bed; a bed frame without bedding
Example
The wooden bed stead was very sturdy.
木製のベッドフレームは非常に丈夫でした。
A2 noun /bæˈleɪ/

ballet

バレエ
Meaning
a highly stylized and artistic form of dance
Example
She has trained for years in classical ballet.
彼女は何年もクラシックバレエを練習してきました。
C1 verb /bɔːk/

balk

拒否する
Meaning
to hesitate or refuse to proceed or comply
Example
She balked at signing the contract without reading it fully.
彼女は契約書を完全に読まずに署名することをためらった。
C1 verb /bɒmˈbɑːrd/

bombard

Meaning
to attack continuously with bombs, questions, or other forces
Example
Reporters bombarded the minister with difficult questions.
A1 noun /bʌs/

Bus

バス
Meaning
a large motor vehicle carrying passengers by road
Example
I take the bus to work every morning.
私は毎朝バスで仕事に行きます。
B1 noun /ˈbeɡər/

Beggar

乞食
Meaning
a person who lives by asking for money or food
Example
The beggar sat by the temple asking for alms.
その乞食は寺の近くで施しを求めて座っていました。
C1 adjective bəˈnev.əl.ənt

benevolent

慈悲深い, 寛大な, 親切な
Meaning
Kind, generous, showing goodwill and kindness.
Example
His benevolent nature made him beloved.
彼の寛大な性格は彼をとても愛される人にしました。
A2 noun /bɒs/

boss

ボス
Meaning
a person who is in charge of a worker, group, or organization
Example
Her boss gave her a new project to complete.
彼女のボスは彼女に新しいプロジェクトを任せた。
A2 noun /bɪər/

beer

ビール
Meaning
An alcoholic drink made from yeast-fermented malt flavored with hops.
Example
He ordered a glass of cold beer at the bar.
彼はバーで冷たいビールを注文した。
C2 noun /bænˈdænə/

bandanna

大きなカラフルなバンダナ
Meaning
A large, often brightly colored handkerchief, typically worn on the head or around the neck.
Example
He tied a red bandanna around his neck.
彼は首に赤いバンダナを結んだ。
B2 adjective /ˈbɪtər/

Bitter

苦い; 強い味; 怒りや失望を表す
Meaning
having a sharp, pungent taste; feeling or showing anger and disappointment
Example
The medicine had a bitter taste.
薬は苦い味がしました。
B2 adjective /beər/

Bare

裸; 未覆われた; 空; 最小限
Meaning
naked; uncovered; empty; minimal
Example
The bare walls of the room needed some decoration.
部屋の裸の壁は何か飾りが必要だった。
C1 noun /bəˈrɒmɪtər/

barometer

気圧計
Meaning
an instrument that measures atmospheric pressure
Example
The barometer indicated a storm was approaching.
バロメーターは嵐が近づいていることを示しました。
C2 noun /ˈbɒmbæst/

bombast

大げさな言葉
Meaning
speech or writing that is overly pompous and inflated
Example
His campaign speech was full of bombast but lacked real substance.
彼の選挙演説はボンバストに満ちていたが、実際の実質は欠けていた。
B2 adjective /ˌbaɪəˈlɒdʒɪkl̩/

biological

生物学的
Meaning
relating to the science of biology or to life and living organisms
Example
She is studying biological sciences at university.
彼女は大学で生物学的な科学を学んでいます。
C1 adjective ˈbɜːdʒənɪŋ

burgeoning

急成長
Meaning
Beginning to grow or increase rapidly; flourishing.
Example
The burgeoning tech industry has attracted many investors.
急成長しているテクノロジー業界は、多くの投資家を引き付けました。
B1 adjective /bɔɪld/

Boiled

ゆでた
Meaning
cooked in boiling water
Example
She served boiled eggs for breakfast.
彼女は朝食に茹で卵を出しました。
B1 noun /ˈbɒksər/

boxer

ボクサー; ボクサーパンツ; ボクサー犬
Meaning
a person who fights in the sport of boxing; a type of short loose-fitting underwear; a breed of medium-to-large dog
Example
The boxer trained hard every morning before the championship match.
そのボクサーはチャンピオンシップの前に毎朝厳しく練習した。
B2 adjective /bɪˈliːvəbl̩/

believable

信じられる
Meaning
Able to be trusted or accepted as true or reasonable.
Example
Her story was so detailed that it sounded believable.
彼女の話は非常に詳細で、信じられるように聞こえました。
C2 adjective /ˈbɪbjələs/

bibulous

酒好き
Meaning
Excessively fond of drinking alcohol.
Example
His bibulous habits worried his family.
彼の酒好きな習慣は家族を心配させた。
B2 noun ˈbaɪ.əʊˌfjuː.əl

biofuel

バイオ燃料
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.
バイオ燃料は従来のエネルギー源への依存を減らします。
C1 adjective /ˈblʌdləs/

bloodless

血のない
Meaning
without bloodshed; lacking violence or vitality
Example
The revolution was surprisingly bloodless.
革命は驚くべきことに血を流さなかった。
A2 noun /ˈbɑt.əm/

Bottom

底; 最下部
Meaning
the lowest point or part of something; the ground under a body of water
Example
The treasure chest was lying at the bottom of the ocean.
宝物の箱は海の底にあった。
C1 noun /bɪz/

Biz

ビジネス
Meaning
business (informal); commercial enterprise or activity
Example
He's been in the restaurant biz for twenty years.
彼は20年間、レストランのビジネスをしてきました。
C2 adjective /bɪˈnɪɡnənt/

benignant

慈悲深い, 親切な
Meaning
Kindly and benevolent in nature.
Example
The teacher’s benignant attitude made the students feel comfortable.
先生の寛大な態度が学生たちを快適にさせた。
A2 noun /biː/

Bee

Meaning
a flying insect that produces honey and can sting
Example
The bee collected nectar from the flower.
蜂は花から蜜を集めました。
C1 verb /bɪˈhɛd/

behead

斬首する
Meaning
to cut off a person's or animal's head; to remove the leader or most important part
Example
The historical account describes how the traitor was beheaded as punishment.
歴史的記録は、罰として裏切り者が斬首された様子を描写している。
C1 adjective /ˈbær.ən/

Barren

不毛の; 荒涼とした; 生産性がない; 不生産的
Meaning
sterile; unable to produce; desolate; unproductive
Example
The barren desert stretched for miles without any vegetation.
荒れ果てた砂漠は何マイルも広がり、植物は一切なかった。
B1 verb /beɪð/

bathe

入浴
Meaning
to wash oneself; to clean the body with water
Example
I bathe every morning before going to work.
私は毎朝、仕事に行く前にお風呂に入ります。
C2 verb /bɪˈsiːtʃ/

beseech

懇願する
Meaning
To ask someone urgently and fervently to do something; to beg.
Example
He beseeched the judge for mercy.
彼は裁判官に慈悲を請いました。
B2 noun/verb /bʌk/

buck

Meaning
A male deer; also to resist or oppose strongly.
Example
The horse began to buck wildly as the rider tried to hold on.
C1 adjective /ˌboʊnəˈfaɪdi/

Bonafide

本物の; 正当な; 合法の
Meaning
genuine; authentic; legitimate
Example
She is a bonafide expert in her field.
彼女はその分野の本物の専門家です。
A2 verb /beɪs/

base

基づく
Meaning
to use something as a foundation; to establish or locate something
Example
They based their decision on facts.
彼らは事実に基づいて決定を下しました。
C1 noun /ˈbænɪstər/

banister

手すり
Meaning
a railing supported by posts at the side of a staircase or balcony
Example
She held the banister tightly while going down the stairs.
彼女は階段を降りる時、手すりをしっかりと握っていた。
C2 noun /brɔːn/

brawn

体力
Meaning
physical strength in contrast to intelligence
Example
He used his brawn to lift the heavy box.
彼は重い箱を持ち上げるために体力を使いました。
B2 verb /ˈbrɔːdən/

broaden

広げる
Meaning
to make wider or larger in scope; to expand ideas, experience, or understanding
Example
Travel can broaden your perspective on different cultures.
旅行は異なる文化への視野を広げてくれる。
C1 noun /ˈbærɪˌtoʊn/

baritone

低い男性の声
Meaning
a male singing voice between tenor and bass
Example
The singer’s baritone voice impressed the audience.
歌手のバリトンの声は観客に感銘を与えました。
C2 noun /ˌbʌkəˈnɪər/

buccaneer

海賊
Meaning
a pirate, especially one active in the Caribbean during the 17th and 18th centuries
Example
The buccaneer sailed across the Caribbean in search of treasure.
その海賊はカリブ海を航海し、宝物を探していた。
C2 noun /bʊr/

Boor

野蛮人; 無礼な人
Meaning
a rough and bad-mannered person; someone who lacks refinement or culture
Example
The wealthy businessman was actually a boor who showed no respect for others.
その裕福なビジネスマンは実際には他の人々に対して敬意を示さなかった野蛮人でした。
C1 noun /ˈbjuːɡəl/

Bugle

バグル
Meaning
a brass musical instrument similar to a trumpet but without valves, used especially for military calls
Example
The soldier played the bugle to signal the start of the ceremony.
兵士は式典の開始を合図するためにバグルを吹いた
C2 noun /ˈbɜːrsər/

bursar

会計係
Meaning
An official in a school or college responsible for financial affairs.
Example
The bursar approved the budget for the new library.
会計係は新しい図書館の予算を承認しました。
A2 noun /brɛθ/

breath

呼吸
Meaning
The air taken into or expelled from the lungs during breathing.
Example
He took a deep breath before speaking.
彼は話す前に深く息を吸いました。
C1 verb bɪˈkwiːð

bequeath

遺贈する
Meaning
Leave something to someone in a will; pass down or hand down to the next generation.
Example
The scientist bequeathed his research papers to the university.
科学者は彼の研究論文を大学に遺贈した。
A2 noun /ˈbʌk.ɪt/

Bucket

バケツ
Meaning
a roughly cylindrical open container with a handle, used to hold and carry liquids
Example
The farmer filled the bucket with fresh water from the well.
農夫は井戸から新鮮な水でバケツを満たしました。
C1 verb /bɪˈsɛt/

beset

Meaning
to trouble, harass, or attack on all sides
Example
The village was beset by constant floods.
C1 adjective /ˈbreɪzən/

brazen

Meaning
Bold and without shame; shameless.
Example
She made a brazen attempt to lie in front of everyone.
B1 noun /ˈbed ʃiːt/

Bed sheet

ベッドシーツ
Meaning
a large rectangular piece of cloth used as bedding to lie on or under
Example
The clean white bed sheet felt soft against her skin.
清潔な白いベッドシーツは彼女の肌に柔らかく感じました。
B2 adjective /bɪˈzɑːr/

bizarre

奇妙な
Meaning
very strange or unusual, especially so as to cause interest or amusement
Example
He told a bizarre story that no one could believe.
彼は誰も信じられないような奇妙な話をした。
B2 noun/verb /ˈbʌfər/

buffer

バッファ / 衝撃吸収
Meaning
Something that lessens or absorbs the impact of a shock; to act as a protective barrier.
Example
The organization acts as a buffer between workers and management.
その組織は労働者と経営陣の間のバッファとして機能します。
B2 noun ˌbaɪ.oʊ.dɪˈvɝː.sə.t̬i

biodiversity

生物多様性
Meaning
The variety of life in the world or in a particular habitat or ecosystem.
Example
Rainforests are home to immense biodiversity.
熱帯雨林は膨大な生物多様性を持っています。
C2 noun /ˈbælæst/

ballast

バラスト
Meaning
heavy material used to stabilize a ship or vehicle
Example
The ship was loaded with ballast to remain steady in the storm.
嵐の中で船が安定を保つためにバラストが積まれていました。
C2 adjective /ˈbʌsti/

busty

胸が豊かな
Meaning
having a large or full bust; describing a woman with a prominent chest
Example
The actress was often described as busty in fashion magazines.
その女優はファッション雑誌でよく胸が豊かなと表現された。
B2 noun /ˈbiː.təl/

Beetle

カブトムシ
Meaning
a hard-bodied insect with wing covers
Example
The black beetle scurried across the garden path.
黒いカブトムシが庭の道を走っていました。
C2 noun /ˌbækəˈneɪliə/

bacchanalia

酒と楽しみの祭り
Meaning
A Roman festival of Bacchus celebrated with dancing, drinking, and revelry; any occasion of wild and drunken revelry.
Example
The novel describes the party as a bacchanalia of excess and joy.
小説はそのパーティーを過剰と喜びのバッカナリアとして描いています。
A1 verb /bɪˈliːv/

believe

信じる
Meaning
to think that something is true; to have faith in
Example
I believe in hard work and dedication.
私は努力と献身を信じます。
C2 noun /buːb/

boob

ばか者;胸(俗語)
Meaning
a foolish or clumsy person; an informal and sometimes rude term for a woman's breast
Example
He felt like a complete boob after forgetting the meeting.
会議を忘れて、彼は完全なばか者だと感じた。
B2 noun, verb /bəˈfeɪ/ (noun), /ˈbʌfɪt/ (verb)

buffet

Meaning
A meal where guests serve themselves from a variety of dishes arranged on a table; also means to strike repeatedly (as a verb).
Example
We enjoyed a large buffet at the wedding reception.
C1 noun /ˈbɑːr.tər ˌsɪs.təm/

barter system

物々交換システム
Meaning
A system of exchange where goods and services are traded directly without using money.
Example
Ancient civilizations used the barter system for trade.
古代の文明は貿易のために物々交換システムを使用していました。
C2 adjective /beɪˈkoʊniən/

baconian

ベコニアン
Meaning
Relating to the philosopher Francis Bacon or his method of scientific reasoning.
Example
The researcher followed a Baconian approach to observation and experimentation.
研究者は観察と実験のためにベコニアンアプローチを採用しました。
C2 noun /ˈblʌfər/

bluffer

はったり屋
Meaning
a person who pretends to be more confident, skilled, or knowledgeable than they really are; someone who deceives others by bluffing
Example
Everyone eventually realized that he was just a bluffer with no real experience.
彼がただのはったり屋だと皆が気づいた。
A2 preposition /bɪˈloʊ/

below

Meaning
At a lower level or position than something else.
Example
The basement is below the ground floor.
地下室は一階の下にあります。
B1 noun /bʌn/

Bun

パン
Meaning
a small round bread roll, often sweet
Example
I bought fresh buns from the bakery this morning.
今朝ベーカリーで新鮮なパンを買いました。
B1 noun /bʊʃ/

bush

茂み
Meaning
a plant with many small branches growing close to the ground; a shrub
Example
A rabbit was hiding under the bush.
ウサギは茂みの下に隠れていました。
C1 noun/adjective /ˈbæstərd/

bastard

私生児
Meaning
a child born to unmarried parents (offensive); also used informally as an insult or to describe something unpleasant
Example
He called him a bastard in anger.
彼は怒りで彼をバスタードと呼んだ。
A1 adjective /blæk/

Black

Meaning
having the darkest color; the opposite of white
Example
She wore a beautiful black dress to the party.
彼女はパーティーに美しい黒いドレスを着て行った。
B2 noun /ˈbrændɪŋ/

branding

ブランドまたは会社のアイデンティティを作成し、促進するプロセス
Meaning
The process of creating and promoting a brand or company identity.
Example
Effective branding is key to building customer loyalty.
効果的なブランディングは顧客の忠誠心を築くための鍵です。
B2 noun /ˈbæk.boʊn/

Backbone

背骨
Meaning
the series of vertebrae extending from the skull to the pelvis; spine
Example
He injured his backbone in the accident.
彼は事故で背骨を怪我した。
C2 noun ˌbaɪ.oʊ.əˈveɪ.lə.bɪl.ə.ti

bioavailability

体内吸収能力
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.
ターメリックのバイオアベイラビリティは、黒コショウと一緒に摂取することで増加します。
A2 noun /ˈbiː.ɪŋ/

Being

存在; 生物; 存在の状態
Meaning
existence; a living creature; the state of existing
Example
Every human being deserves respect and dignity.
すべての人間は尊敬と尊厳に値する。
C2 verb /bɪˈdræɡəl/

bedraggle

泥や水を引きずって物を濡らし、汚し、乱れさせる
Meaning
to make something wet, dirty, and untidy by dragging it through mud or water
Example
The children came home bedraggled after playing in the rain.
子供たちは雨の中で遊んだ後、濡れて泥だらけで家に帰った。
B2 noun /bleɪd/

Blade

Meaning
a sharp flat cutting edge of a knife, sword, or tool
Example
The blade of the knife needs to be sharpened.
ナイフの刃は研がなければならない。
A2 adverb /ˈbjuːtɪfəli/

beautifully

美しく
Meaning
in a beautiful or pleasing manner; excellently or skillfully
Example
She sang beautifully at the concert.
彼女はコンサートで美しく歌った。
B1 verb /bʌmp/

bump

衝突
Meaning
To hit something or someone by accident; to knock against something.
Example
He accidentally bumped into the door.
彼はドアに偶然ぶつかった。
C1 verb /bɪˈwɪldər/

bewilder

困惑させる
Meaning
to cause someone to be confused or puzzled
Example
The complex instructions bewildered the students.
複雑な指示は学生を困惑させました。
B2 noun /ˈbʌf.ə.loʊ/

Buffalo

バッファロー
Meaning
a large wild ox with heavy horns; American bison
Example
The buffalo grazed peacefully in the meadow.
バッファローは草原で平和に草を食べていた。
C2 adjective /ˈbeɪnfəl/

baneful

有害な
Meaning
Causing harm, ruin, or destruction; deadly or poisonous.
Example
His baneful influence ruined the community.
彼の有害な影響がコミュニティを破壊した。
C1 noun /ˈblæs.fə.mi/

blasphemy

冒涜
Meaning
the act of speaking disrespectfully about God or sacred things
Example
In some countries, blasphemy is a punishable offense.
いくつかの国では、冒涜は罰せられる犯罪です。
C1 noun /buːn/

boon

恩恵
Meaning
A thing that is helpful or beneficial.
Example
The internet is a boon to modern education.
インターネットは現代教育にとって恩恵です。
B1 noun /boʊ/

Bow

Meaning
a weapon for shooting arrows, made of a curved piece of wood
Example
The archer drew his bow and aimed at the target.
射手は弓を引いて、ターゲットを狙った。
B1 verb /bæn/

ban

禁止する
Meaning
to officially forbid something; to prohibit
Example
The government banned smoking in public places.
政府は公共の場所での喫煙を禁止した。
B2 adjective /ˈbruː.təl/

brutal

残酷
Meaning
extremely cruel or harsh; violent and without feeling
Example
The dictator’s rule was marked by brutal violence.
独裁者の統治は残酷な暴力によって特徴付けられていた。
B1 noun /ˈbeɪ.kɪŋ ˈpaʊ.dər/

Baking Powder

ベーキングパウダー
Meaning
a dry chemical leavening agent used to increase volume and lighten texture in baked goods
Example
The recipe calls for two teaspoons of baking powder.
レシピにはベーキングパウダーを小さじ2杯使います。
C2 noun /ˈbʌɡəˌbuː/

bugaboo

恐怖 / 不安
Meaning
An object of fear or worry; an imagined cause of anxiety.
Example
The threat of inflation became a political bugaboo.
インフレーションの脅威は政治的な恐怖に変わった。
B1 verb /blɛs/

bless

祝福する
Meaning
to give divine favor; to ask for God's favor
Example
The priest blessed the congregation.
牧師は会衆を祝福しました。
B2 noun /ˈbɒtəni/

botany

植物学
Meaning
the scientific study of plants
Example
She is studying botany at the university.
彼女は大学で植物学を学んでいます。
C2 noun /ˌbenɪˈdɪkʃən/

Benediction

祝福
Meaning
a blessing, especially a ceremonial one; an expression of good wishes
Example
The priest gave his benediction to the newlyweds.
神父は新婚夫婦に祝福を与えました。
A1 adjective /bɔːrd/

bored

退屈した
Meaning
feeling weary or uninterested because of lack of activity or excitement
Example
She felt bored during the long meeting.
彼女は長い会議の間、退屈していた。
B1 noun /ˈbed ˌkʌv.ər/

Bed cover

ベッドカバー
Meaning
a protective covering for a bed, typically a bedspread or comforter
Example
She pulled the bed cover up to her chin to stay warm.
彼女は暖かさを保つためにベッドカバーを顎まで引き上げました。
B2 noun /bædʒ/

badge

バッジ
Meaning
A small emblem or sign worn to show membership, authority, or achievement.
Example
The police officer showed his badge to identify himself.
警察官は自分を識別するためにバッジを見せた。
C1 noun /ˈbaɪoʊˌsfɪr/

Biosphere

バイオスフィア
Meaning
the regions of the surface and atmosphere of the earth occupied by living organisms
Example
Climate change is affecting the entire biosphere.
気候変動はバイオスフィア全体に影響を与えています。
C2 noun /brɪˈtæniə/

britannia

ブリタニア
Meaning
the personification of Britain, often shown as a woman with a helmet and shield
Example
Britannia has been a symbol of Britain since Roman times.
ブリタニアはローマ時代からイギリスの象徴です。
C1 noun /ˈbʌrə, ˈbʊrə/

borough

Meaning
A town, district, or administrative division, especially one with its own local government.
Example
Brooklyn is a borough of New York City.
ブルックリンはニューヨーク市の区です。
C2 noun /ˈboʊsən/

boatswain

船員長
Meaning
a ship's officer in charge of equipment and the crew
Example
The boatswain supervised the sailors on deck.
ボーツウェインはデッキで船員を監督しました。
C1 verb, noun /ˈbʌsəl/

bustle

騒々しさ、忙しさ
Meaning
to move in an energetic or noisy manner; busy activity in a place
Example
The marketplace bustled with vendors and customers.
市場は販売員と顧客で賑わっていた。
C1 noun /ˈbɜːrθraɪt/

birthright

生まれつきの権利
Meaning
A privilege or possession that a person has from birth.
Example
Freedom is considered a birthright of every individual.
自由はすべての個人の生まれつきの権利と見なされます。
C2 verb /breɪ/

bray

鳴き声
Meaning
To make a loud, harsh sound like a donkey.
Example
The donkey began to bray loudly in the field.
ロバは畑で大声で鳴き始めました。
C1 verb /ˈbæbəl/

babble

おしゃべりする
Meaning
to talk rapidly and continuously in a foolish way
Example
The baby babbles all day long.
赤ちゃんは一日中おしゃべりしています。
A2 noun /ˈbʌdi/

buddy

友達
Meaning
a close friend or companion, used informally
Example
He went to the movies with his best buddy.
彼は一番の友達と映画を見に行った。
B2 verb /blɜːr/

blur

ぼやける
Meaning
to make something unclear or difficult to see
Example
Tears blurred her vision.
涙が彼女の視界をぼやけさせた。
A1 adjective /ˈbɔːrɪŋ/

boring

退屈
Meaning
not interesting or exciting; dull.
Example
The lecture was so boring that several students fell asleep.
講義は退屈すぎて、何人かの学生が眠ってしまった。
C2 verb /ˈbaʊdləˌraɪz/

bowdlerize

不適切な部分を削除する
Meaning
to remove or modify parts of a text considered offensive or inappropriate
Example
The editor bowdlerized the novel to make it suitable for children.
編集者はその小説を子供向けに適したものにするために修正した。
C1 noun /ˈbraɪ.dəl/

Bridle

手綱; 騎馬用具
Meaning
the headgear used to control a horse, consisting of buckled straps and a bit
Example
The rider adjusted the horse's bridle before mounting for the race.
騎手はレースの前に馬の手綱を調整した。
B1 noun /bʌntʃ/

Bunch

束; 房; 一束
Meaning
a number of things of the same type fastened together or occurring close together
Example
She picked a bunch of flowers from the garden for her mother.
彼女は母親のために庭から花束を摘んできました。
C2 adjective /ˈbuːtləs/

bootless

無駄な
Meaning
Useless or futile; of no benefit.
Example
His bootless attempt to fix the machine only wasted time.
機械を修理する彼の無駄な試みは時間を無駄にしただけだった。