I. ˈwarm-up 1 BrE AmE noun [countable]
1 . a set of gentle exercises you do to prepare your body for sport, dancing etc ⇨ warm up at ↑ warm 2
2 . warm-ups American English informal clothes that you wear when you are doing exercises to prepare your body for playing a sport or dancing ⇨ sweat suit
II. warm-up 2 BrE AmE adjective
1 . a warm-up match, game, or race is held to give the sportsmen or players practice before a big event
2 . warm-up exercises are done to prepare your body before playing a sport or dancing
3 . a warm-up jacket is worn to keep you warm when you are doing exercises
4 . a warm-up man or band prepares the people at an event for the main speaker, singer etc by singing, telling jokes etc