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Phrase(s): warm something over
1. to reheat food to serve it as leftovers. • I’ll just warm the rest over for lunch tomorrow. • Jane warmed over yesterday’s turkey. 2. Fig. to bring up a matter that was thought to have been settled. (Fig. on Q.) • Please don’t warm that business over again. It is settled and should remain that way. • Don’t warm over that matter. We have discussed it enough.
McGrawhill's American Idioms And Phrasal Verbs