- a father, usually one's own: His old man's letting him have the car for the prom.
- a husband: The office is giving my old man a retirement party.
- a boyfriend or male lover, especially a male lover with whom one cohabits.
- a person in a position of authority, especially an employer or a commanding officer: The Old Man has ordered an inspection for Saturday morning.
- (used affectionately in addressing a man).
- old Adam.
- southernwood.
- an informal term for father, husband (def. 1)
- a man in command, such as an employer, foreman, or captain of a ship
- an affectionate term used in addressing a man
- another name for southernwood
- Australian informal
- an adult male kangaroo
- very large
- the unregenerate aspect of human nature
