noun pl. brothers, brethren
- a man or boy as he is related to the other children of his parents: sometimes also used of animals
- a man or boy related to one by having a parent in common; half brother
- a stepbrother
- a foster brother
- a close male friend who is like a brother
- a fellow human being
- a male fellow member of the same race, church, profession, organization, etc.: fraternity brother, soul brother
- a lay member of a men's religious order
- Informal any man: often used as a familiar term of address
interjection
Slang used to provide emphasis, often at the beginning of one's remarks