Brother from another Mother

When your father has a bastard son from another woman, the son becomes your "Brother from another Mother".

So, my father knocked down your mom, that makes you my "Brother from another Mother"

by Randomsniper May 06, 2022

brother from another mother

boy that is your "brother" but has a different mother

boy says to girl- you stink
girl then says back to brother- get away from me you brutha from anotha mutha

by elle February 05, 2005

brother from another mother

A brother in law. Does not apply to a sister in law.

Bob and Sharon were married. Timmy is Sharon's brother. Timmy is Bob's brother from another mother.

by Piefayth July 09, 2006