The term 'BIG EATER' can be described by four crossword solutions: PIG (3 letters), CHOWHOUND (9 letters), HOG (3 letters), GORMANDIZER (11 letters), and TRENCHERMAN (11 letters). A PIG is an animal known for its voracious appetite, while a CHOWHOUND is a person who loves to eat. A HOG is another term for a PIG, and a GORMANDIZER is someone who eats too much or with too much enthusiasm. Finally, a TRENCHERMAN is an old-fashioned term for someone who eats a lot. All of these terms refer to someone who has a large appetite.