Meaning

originPIE word *bʰréh₂tēr Etymology tree Proto-Indo-European *bʰréh₂tēr Proto-Germanic *brōþēr Proto-West Germanic *brōþer Old English brōþor Middle English brother English brotherclip. English bro Spelling pronunciation and clipping of brother. (Contrast bruh, which is a clipping of the pronunciation of brother rather than the spelling.) Compare Swedish bror.

Etymology from Wiktionary, CC BY-SA 3.0