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1.
A person or group of persons with whom you have shared a great deal of hardship and fought alongside, and thus you consider them your brothers.

The name of the group of gladiators that allied with the Hulk in the "Planet Hulk" storyline, referring to them being bound together by the war against the Red King.
Soldier 1: We almost didn't get out of there alive.

Soldier 2: But we fought our way out.

Soldier: I guess that makes us Warbound.
by The REAL 2wingo January 23, 2010