Meaning of COOL in English

COOL

■ adjective

1》 of or at a fairly low temperature.

↘(especially of clothing) keeping one from becoming too hot.

2》 not excited, anxious, or emotional.

↘unfriendly or unenthusiastic.

↘(of jazz) restrained and relaxed.

3》 informal fashionably attractive or impressive.

↘excellent.

↘used to express acceptance or agreement.

4》 ( a ~ —— ) informal used to emphasize the size of a sum of money: they pocketed a ~ $1 million each.

■ noun ( the ~ ) a ~ temperature, place, or time.

■ verb

1》 become or make less hot.

2》 become less emotional or enthusiastic.

Phrases

keep (or lose ) one's ~ informal maintain (or fail to maintain) a calm and controlled attitude.

Derivatives

~ish adjective

~ly adverb

~ness noun

Origin

OE cōl (n.), cōlian (v.), of Gmc origin; related to cold .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.