WordNet (r) 3.0 (2006):
cool down v 1: make cool or cooler; "Chill the food" [syn: cool, chill, cool down] [ant: heat, heat up] 2: lose intensity; "His enthusiasm cooled considerably" [syn: cool, cool off, cool down] 3: loose heat; "The air cooled considerably after the thunderstorm" [syn: cool, chill, cool down] [ant: heat, heat up, hot up]