Top Definition
In a Fraternity, the men that you go through the process of pledging with, are refereed to as your Line Brothers, or LB.

Term commonly used in social fraternities with an "underground" intake process, where the pledges literally stand in a line together and are given numbers/roles.
I have nothing but love for my line brother.

Me and my LB's went through some serious shit that night.
by quercetin May 21, 2016

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