plastic wrap

US /ˈplæs.tɪk ˌræp/
UK /ˈplæs.tɪk ˌræp/
"plastic wrap" picture
1.

a thin, transparent plastic film used for covering food to keep it fresh

:
She covered the leftovers with plastic wrap before putting them in the fridge.
Make sure to seal the bowl tightly with plastic wrap.