Top Definition
A non-blood-relative who is listed as your brother on facebook. (See also, facefamily).
You: What's this invite for dude? We're not related!

Me: Haha, I know man. I just want you to be my facebro!
by A J Dinny November 22, 2010
1 more definition
1) A Dudebro on face book.

2) A Dudebro you meet who wants to be friends on face book.
Man, Dan is totally a facebro. Every sentence had a minimum of 3 dudes and three bros and all he could talk about was his hairgel and new visor.
by ZackMamba April 30, 2009

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