Definitions
1.nounA moderate or refreshing state of cold; moderate temperature of the air between hot and cold; coolness."in the cool of the morning"
2.nounA calm temperament.
3.nounThe property of being cool, popular or in fashion.
4.adjectiveHaving a slightly low temperature; mildly or pleasantly cold.
5.adjectiveAllowing or suggesting heat relief."Linen has made cool and breathable clothing for millennia."
6.adjectiveOf a color, in the range of violet to green."If you have a reddish complexion, you should mainly wear cool colors."
7.adjectiveOf a person, not showing emotion; calm and in control of oneself.
8.adjectiveUnenthusiastic, lukewarm, skeptical."His proposals had a cool reception."
9.adjectiveCalmly audacious."In control as always, he came up with a cool plan."
10.adjectiveApplied facetiously to a sum of money, commonly as if to give emphasis to the largeness of the amount.
11.adjectiveOf a person, knowing what to do and how to behave; considered popular by others.
12.adjectiveIn fashion, part of or fitting the in crowd; originally hipster slang.
13.adjectiveOf an action, all right; acceptable; that does not present a problem."Is it cool if I sleep here tonight?"
14.adjectiveOf a person, not upset by circumstances that might ordinarily be upsetting."I'm completely cool with my girlfriend leaving me."
15.adjectiveQuietly impudent, defiant, or selfish; deliberately presuming: said of persons and acts.