1 : 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"
2 : fashionable and attractive at the time; often skilled or socially adept; "he's a cool dude"; "that's cool"; "Mary's dress is really cool"; "it's not cool to arrive at a party too early"
verbe
1 : lose intensity
nom
1 : great coolness and composure under strain
adjectif
1 : (color) inducing the impression of coolness; used especially of greens and blues and violets