The crossword solution for the term WRAP FOR LEFTOVER FOOD is FOIL, which is an acronym for 'FOIL Out Insulated Layer'. FOIL is a type of packaging material that is used to store food and keep it fresh. It is often used to wrap leftover food in order to keep it from spoiling. FOIL is also used to keep food warm or cold, depending on the desired temperature. FOIL is a great way to store food and keep it fresh for longer periods of time.