n.
- a man or boy in relation to other sons and daughters of his parents.
- a male associate or fellow member of an organization.
- N. Amer. informal a black man.
- something which resembles or is equivalent to another.
(pl. also brethren)
Christian Church a (male) fellow Christian. ▸a member of a religious order of men.
exclam.
chiefly N. Amer. used to express annoyance or surprise.
Derivative
- brotherliness n.
- brotherly adj.
Etymology
OE brōthor, of Gmc origin.