
English word bruv comes from English brother, and later English bruvver ((Cockney, _, slang) Brother.)
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brother (English)
(transitive) To treat as a brother. Expressing exasperation. (African American Vernacular English) A black male.. A male fellow member of a religious community, church, trades union etc.. A male having at least one parent in common with another (see half-brother, stepbrother).. Someone who is a peer, whether male or female.. Son of the same parents as another person.
bruvver (English)
(Cockney, _, slang) Brother.
bruv (English)
(UK, slang, often capitalized) Brother, mate, friend.