Other forms: leftovers
A leftover is food or material remaining after the rest is used. Eat the leftovers, leftover paint, a leftover from the war.
Cooling and storing leftovers within a couple of hours is what keeps them safe, and reheating them thoroughly matters more than how long they have been in the fridge. As an adjective it also means surviving from an earlier time.
1nounleftoverFood or material remaining after the rest is used.
“We had the leftovers from Sunday's roast for lunch on Monday.”
leftover is a remainder.
Left plus over, from the phrase to be left over. The noun is nineteenth-century.
Built from
From left (“remaining, abandoned”) + over (“excess”).
Etymology from Wiktionary, CC BY-SA