1 definition by Red Fury PDX

Top Definition
Any group four or more bros three visible to non bros.
A large group of bros at a sporting event, dance club, etcetera.

"Officer, there was a HUGE bro swarm coming at me and I felt I was I danger and had no other choice but to drive my truck right smack into the middle of them in self defense!” -SE
by Red Fury PDX July 20, 2012

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