'warm up' definitions:

Definition of 'warm up'

From: WordNet
verb
Run until the normal working temperature is reached; "We warmed up the car for a few minutes"
verb
Become more friendly or open; "She warmed up after we had lunch together"
verb
Get warm or warmer; "The soup warmed slowly on the stove" [syn: warm, warm up]
verb
Cause to do preliminary exercises so as to stretch the muscles; "The coach warmed up the players before the game"
verb
Make one's body limber or suppler by stretching, as if to prepare for strenuous physical activity [syn: limber up, warm up, loosen up]

Synonyms of 'warm up'

From: Moby Thesaurus