Top Definition
In the popular games Gears of War and Gears of War 2 for the Xbox 360, this is the shotgun equipped to all soldiers, COG or Locust in multiplayer. This is a widely used weapon in multiplayer and is very deadly at close range with the potential for a 1 shot kill. Although the game developers claim that this gun can counter the Chainsaw Bayonet, this is not true in many cases.
Alex: This guy just tried to rush me with a Hammerburst, but i killed him with the Gnasher Shotgun
Ken: Nice!
by Silentkillr69 December 16, 2008

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