The crossword solution for the term 'Leftover Stuff' is 'RESIDUE'. RESIDUE is a term used to describe any material that remains after a process of separation, such as a chemical reaction or physical change. It is often used to refer to the material that is left behind after a substance has been removed from a mixture. In the context of food, RESIDUE can refer to the food that is left on dishes or utensils after a meal has been eaten.