Meaning

• To become warmer.

  "He came inside to warm up."

• To heat or reheat (e.g. food).

  "I couldn't be bothered to cook another meal so I just warmed up yesterday's leftovers."

• To reach, or cause to reach, a normal operating temperature (of a car for example).

  "These old valve radios take a few minutes to warm up."

• To do gentle exercise, stretching etc., in order to prepare the body for more vigorous exercise.

  "It is important to warm up properly before your gym session."

• To prepare for an activity by carrying out a practice or preparation routine.

  "The band were already on stage, warming up for the gig."

• To make (an audience) enthusiastic or animated before a show

  "Rich knew how to warm up the audience of The Price is Right. His good looks and charming personality made even that special."