cool [kool] 1. moderately cold; neither warm nor cold: a rather cool evening. 2. feeling comfortably or moderately cold: I'm perfectly cool, but open the window if you feel hot. 3. imparting a sensation of moderate coldness or comfortable freedom from heat: a cool breeze. 4. permitting such a sensation: a cool dress. 5. not excited; calm; composed; under control: to remain cool in the face of disaster. 6. Paul / viNNN