a male with the same parents as someone else; my brother still lives with our parents
[ Syn: blood brother ]
a male person who is a fellow member (of a fraternity or religion or other group); none of his brothers would betray him'
a close friend who accompanies his buddies in their activities
used as a term of address for those male persons engaged in the same movement; Greetings, comrade!
[ Syn: comrade ]
(Roman Catholic Church) a title given to a monk and used as form of address; a Benedictine Brother
[ Syn: brother ]