brother meaning and definition

BROTHER noun

Definition of brother (noun)

1. a male with the same parents as someone else
   • "my brother still lives with our parents"
   • synonyms: blood brother
   • antonym: sis
2. a male person who is a fellow member (of a fraternity or religion or other group)
   • "none of his brothers would betray him"
3. a close friend who accompanies his buddies in their activities
   • synonyms: buddy, chum, crony, pal, sidekick
4. used as a term of address for those male persons engaged in the same movement
   • "Greetings, comrade!"
   • synonyms: comrade
5. (Roman Catholic Church) a title given to a monk and used as form of address
   • "a Benedictine Brother"