Butterball is a brand of turkey that is known for its plumpness and juiciness. The term 'Butterball' can be broken down into two crossword solutions: FATSO (5 letters) and TUB (3 letters). FATSO is a slang term used to describe someone who is overweight, while TUB is a large container used to hold liquids or other items. Together, these two words form the term 'Butterball, ' which is used to describe a large, juicy turkey.