leftover

Etymology

From left (“remaining, abandoned”) + over (“excess”).

adj

1. Remaining; left behind; extra; in reserve.
   Do you want some of the leftover supplies from the event?
   I have some leftover spaghetti in the fridge, so I don't plan to cook tonight.

noun

1. Something left behind; an excess or remainder.
   It's a leftover from yesterday, but it's still perfectly good.
2. (chiefly in the plural, usually of food) Remaining after a meal is complete or eaten for a later meal or snack.
   Not leftovers again!
   The entire wheel of cheese is a leftover from the party.