1 definition by LUEshi owns j00

Top Definition
From the world of Halo, a MAC (Magnetic Accelerator Cannon) gun is one of the humans defenses, usually placed on ships or orbital defense stations. Basically, a MAC gun is a similiar, if not the same, to a rail gun, with its high power and velocity/
That MAC gun just ripped a hole through that Covenant flagship!
by LUEshi owns j00 January 24, 2005
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