/wawr"meuhr up"euhr/ , n. Informal.
1. something that provides one with invigorating warmth: Hot soup is a good warmer-upper after skiing.
2. something that serves to warm up an audience or group of participants before a main event: Radio stations played martial music as a warmer-upper before the prime minister's speech.
[ 1940-45; warm up + -ER 1 , applied pleonastically to both v. and particle ]