Clothing that is cool is made of thin material so that you do not become too hot in hot weather. In warm weather, you should wear clothing that is cool and comfortable. warm
When something cools or when you cool it, it becomes lower in temperature. Drain the meat and allow it to cool Huge fans will have to cool the concrete floor to keep it below 150 degrees. a cooling breeze. To cool down means the same as to cool. Avoid putting your car away until the engine has cooled down The other main way the body cools itself down is by panting
emphasis You can use cool to emphasize that an amount or figure is very large, especially when it has been obtained easily. Columbia recently re-signed the band for a cool $30 million
If you keep your cool in a difficult situation, you manage to remain calm. If you lose your cool, you get angry or upset. She kept her cool and managed to get herself out of the ordeal
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"
A moderate state of cold; coolness; said of the temperature of the air between hot and cold; as, the cool of the day; the cool of the morning or evening
neither warm or very cold; giving relief from heat; "a cool autumn day"; "a cool room"; "cool summer dresses"; "cool drinks"; "a cool breeze"