old (30s-40s) term for a handgun: same vintage as gat, heater, cannon, etc.
by Peter Haskett March 12, 2005
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An old term used for a gun or firearm, usually a handgun or sidearm.
"Had me scared, had me scared, I was shook Daddy - but I forget I had my Roscoe on me."
-Notorious B.I.G.

"Hey man, you better cock that Roscoe, here comes trouble."
by sasadrtwet October 25, 2005
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I keep my Roscoe on me just in case trouble approaches
by Slim negro December 20, 2016
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a nother term for either a pistol or a penis
" sorry, just gotta adjust my rosco"

" shit, man, don't do that in here!"
by joe don baker December 21, 2002
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When a man slaps a woman in the face with his wang and leaves a phallic shaped bruise on their face.
After I jizzed in her hair I give her such a rosco that she cried.
by Jayzig August 19, 2007
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The art of trying to swiftly cock-block a group of guys.
"I was trying to hook up with some broad last night, until I was Roscoed by some hater."
by ace high April 28, 2009
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