Answer: leftover

AnswerCrossword Clue
LEFTOVERLast night's dinner
LEFTOVERLike doggy bag contents
LEFTOVERUneaten
LEFTOVERSomething in the icebox.
LEFTOVERRemaining.
LEFTOVERScrap.
LEFTOVERSurplus.
LEFTOVERPostfeast tidbit
LEFTOVERSurplus or vestige
LEFTOVERRemnant
LEFTOVERScrap for Fido
LEFTOVERLunch item, sometimes
LEFTOVERScrap for Fido, perhaps
leftoveran unused portion
leftoverSomething, esp. food, remaining after the rest has been used or consumed