what's the definition of junk?
junk food. n. (Cookery) food that is low in nutritional value, often highly processed or ready-prepared, and eaten instead of or in addition to well-balanced meals. junkâ² food`. n. 1. food, as potato chips or candy, that is high in calories but of little nutritional value. 2. anything that is attractive or diverting but of negligible substance.