warmingover

noun
UK /ˈwɔːmɪŋˌəʊvə/
US /ˈwɔːrmɪŋˌoʊvər/

A warmingover is when you heat up food that was already cooked before.

We had a warmingover of last night's soup for lunch.


OTHER MEANINGS

2. The act of making something warm again.

The warmingover of the room took only a few minutes.

3. A dish made from food that has been cooked once and then heated again.

Grandma's warmingover tasted even better the second day.

4. A repeat of an old idea or plan with small changes.

The new proposal was just a warmingover of last year's plan.