What does "warm" mean?
See warm in WNW Idioms
warm up
- to heat or be heated; make or become warm
- to make or become sufficiently warm to operate effectively or efficiently to warm up an engine
- to reheat (cooked food, etc.)
- to make or become more animated, excited, ardent, lively, etc.
- to practice or exercise a while before going into a game, contest, performance, etc.
Learn more about warm