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Originally, an armed private security "detective" primarily concerned with breaking labor union strikes.

Currently, any violent criminal with a firearm.
There's Pinkerton gun thugs outside. Hide the children while I check the rifles.

Omar is a gun thug.
by needsfishauce February 11, 2011
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Similar to DFO, Someone who really enjoys being surrounded by people of the same sex
man DAVE F. is a real gunthug.. he always hanging around with the dudes
by big G. AL March 17, 2010
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