1. A male with the same parents as someone else
   "my brother still lives with our parents";
   - blood brother
    
2. (religion) a male person who is a fellow member (of a fraternity, religion or other group)
   "none of his brothers would betray him"
    
3. Used as a term of address for those male persons engaged in the same movement
   "Greetings, brother!";
   - comrade
    
4. A close male friend who accompanies his buddies in their activities
   "He considered his teammates to be his brothers on and off the field"

1. (Roman Catholic Church) a title given to a monk and used as form of address
   "a Benedictine Brother"

Derived forms: Brothers, brothers

Type of: adult male, bozo [N. Amer, informal], bud [N. Amer, informal], buddy [informal], cat [N. Amer, informal], chappie [Brit, informal], china [Brit, informal], chum [informal], cobber [Austral, informal], compadre, crony [informal], fellow member, friend, geezer [Brit, informal], guy [informal], hombre [N. Amer, informal], male sibling, man, mate [Brit, informal], member, monastic, monk, paisano [US], pal [informal], sod [informal]

Part of: brotherhood, fraternity, sodality

Encyclopedia: Brother, Cry for Me