The brother of one's father or mother; also applied to an aunt's husband; -- the correlative of aunt in sex, and of nephew and niece in relationship.
- The brother of one's mother or father.
- The husband of one's aunt.
- Used as a form of address for an older man, especially by children.
- A kindly counselor.
- Slang A pawnbroker.
- Uncle Sam.
- cry Informal To indicate a willingness to give up a fight or surrender: tickled my brother until he cried uncle.