The crossword solution for the term 'Lump of Gum' is WAD, which is an acronym for a three-letter word. WAD stands for 'WAD of chewing gum, ' which is a small, compacted mass of chewing gum. It is often used to refer to a single piece of gum, or a small amount of gum that has been collected together. Chewing gum is a type of confectionery that is made from a variety of ingredients, including sugar, gum base, and flavoring. It is chewed for its flavor and texture, and is often used as a breath freshener.