definition of
cool

[1] #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] #2 cool v. [chill, cool down] make cool or cooler; "Chill the food". wn

[3] #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] #4 cool v. [chill, cool down] loose heat; "The air cooled considerably after the thunderstorm". wn

[5] #5 cool n. the quality of being at a refreshingly low temperature; "the cool of early morning". wn