A best friend.
Someone who is a peer, whether male or female.
A form of address to a man.
A male fellow member of a religious community, church, trades union etc.
Son of the same parents as another person.
A male having at least one parent in common with another (see half-brother, stepbrother).
Somebody, usually male, connected by a common cause, situation, or affection.
A black male.
Someone who is a kinsman or shares the same patriarch.
Expressing exasperation.
To treat as a brother.