Refers to food left uneaten after a meal. Often used in contexts of not wasting food or cleaning one's plate.
See also: 食べ残し
I put the leftovers in the fridge.
He gave the leftovers to the dog.
Standard kanji spelling.
Variant spelling; less common but still used.
Compound of 食い (stem of 食う 'to eat') + 残し (stem of 残す 'to leave behind').