Meaning of COOL in English

COOL

n.

Function: noun

Date: 15th century

1 : a cool time, place, or situation <the cool of the evening>

2 a : absence of excitement or emotional involvement : DETACHMENT <must surrender his fine cool and enter the closed crazy world of suicide ― Wilfrid Sheed> b : POISE , COMPOSURE <press questions ⋯ seemed to rattle him and he lost his cool ― New Republic >

3 : HIPNESS

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.