#1 cool a. neither warm nor very cold; giving relief from heat; "a cool autumn day"; "a cool room"; "cool summer dresses"; "cool drinks"; "a cool breeze". wn
#2 cool v. [chill, cool down] make cool or cooler; "Chill the food". wn
#3 cool s. [coolheaded, nerveless] marked by calm self-control (especially in trying circumstances); unemotional; "play it cool"; "keep cool"; "stayed coolheaded in the crisis"; "the most nerveless winner in the history of the tournament". wn
#4 cool v. [chill, cool down] loose heat; "The air cooled considerably after the thunderstorm". wn
#5 cool n. the quality of being at a refreshingly low temperature; "the cool of early morning". wn
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