The crossword solution for the term 'A Little Butter' is KID, which is a three-letter word. KID is a slang term that is used to refer to a young person or child. It is also used to describe someone who is inexperienced or naive. The phrase 'A Little Butter' is often used to describe someone who is young and inexperienced. Therefore, the crossword solution of KID for the term 'A Little Butter' is appropriate.