2.Definition: 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"
3.Definition: inducing the impression of coolness; used especially of greens and blues and violets when referring to color
"Cool greens and blues and violets", "The cool sound of rushing water"
4.Definition: marked by calm self-control (especially in trying circumstances); unemotional
"Play it cool", "Keep cool", "Stayed coolheaded in the crisis"
5.Definition: neither warm nor very cold; giving relief from heat
"A cool autumn day", "A cool room", "Cool summer dresses", "Cool drinks", "A cool breeze"
6.Definition: psychologically cool and unenthusiastic; unfriendly or unresponsive or showing dislike
"Relations were cool and polite", "A cool reception", "Cool to the idea of higher taxes"
7.Definition: used of a quantity or amount (especially of money) for emphasis
"A cool million bucks"