C1 noun /ˈkɜːrnəl/

kernel

何かの中心; ナッツや種子の食べられる部分

Meaning

the central, most important part of something; the edible part of a nut or seed

Example

The kernel of the argument was about fairness.

議論の核心は公平についてでした。

C1 noun ˈkiː.stəʊn ˈspiː.ʃiːz

keystone species

キーストーン種

Meaning

A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Example

Wolves are a keystone species that regulate prey populations.

オオカミは獲物の個体数を調整するキーストーン種です。

C1 noun /ˈkærət/

karat

カラット

Meaning

A unit for measuring the purity of gold, with 24 karats being pure gold.

Example

The ring was made of 18-karat gold.

その指輪は18カラットの金で作られていました。

C1 verb /niːd/

knead

こねる

Meaning

to work dough or clay into a uniform mixture by pressing, folding, and stretching

Example

She kneads the dough until it becomes smooth.

彼女は生地を滑らかになるまでこねます。

C1 noun /ˈkiːpˌseɪk/

keepsake

記念品

Meaning

An object kept as a reminder of a person, place, or event.

Example

She gave me a small locket as a keepsake of our friendship.

彼女は私たちの友情の記念として小さなロケットをくれました。

C1 noun /kəˈlaɪdəˌskoʊp/

kaleidoscope

万華鏡

Meaning

A toy or instrument with mirrors and colored pieces that create changing patterns when rotated; also used metaphorically for a constantly changing sequence of patterns or elements.

Example

The city lights turned into a kaleidoscope of colors as the festival began.

祭りが始まると、街の明かりは色とりどりの万華鏡に変わった。

C1 noun /kɪˈməʊnoʊ/

kimono

着物

Meaning

a traditional Japanese robe with wide sleeves, tied with a sash

Example

She wore a beautiful silk kimono at the ceremony.

彼女は儀式で美しい絹の着物を着ていた。

C1 adjective /ˈnæk.ərd/

Knackered

非常に疲れた; くたびれた

Meaning

extremely tired; exhausted

Example

I'm absolutely knackered after working all day.

私は一日中働いた後、完全に疲れ果てました。

C1 noun /ˈken.əl/

Kennel

犬小屋; 犬の繁殖や預かりを行う施設

Meaning

a small shelter for a dog; an establishment for the breeding or boarding of dogs

Example

The dog slept comfortably in his wooden kennel in the backyard.

犬は裏庭の木製のケネルで快適に寝ていました。

C1 noun /ˈkɪŋ.fɪʃ.ər/

King-Fisher

カワセミ

Meaning

a small bird with bright blue and orange feathers that catches fish by diving into water

Example

The colorful kingfisher dove into the pond to catch a fish.

色とりどりのカワセミが池に飛び込んで魚を捕まえました。

C1 adjective /kɪˈnɛtɪk/

kinetic

運動エネルギー

Meaning

Relating to or resulting from motion.

賛辞

Meaning

Praise and honor received for an achievement.

Example

She received kudos for her excellent performance.

彼女は素晴らしいパフォーマンスで賛辞を受けた。