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17.
cap
a word used to describe finishing something, originating from college students saving the bottlecaps of handles of liquor. To cap something is to finish it off, preferably with some sort of class. You can do this with bottles, women, drugs, and all sorts of other shit.

For example, finishing a handle involves drinking the last bit, but capping a handle involves saving the cap and throwing the bottle at someone. (classy as fuck)

Can be used in place of almost any word.
Yo dude we capped 3 handles last night.

Whoa, did he cap that chick last night?

Damn man, I capped the last of my shit today, I'm bummed.

Shit dude, I'm capped, I need to get home

Lets cap this shit man, finish it quick.

Hitting on roll niggas big ears and killers
by quepaso November 19, 2012
 
1.
cap
to shoot someone with a handgund turned to the side
nigga back off or im a cap yo ass wit a rusty nine!
by Nick The Hobo March 07, 2004
 
2.
cap
Originally, a kneecap. The phrase "bust a cap" originated in Northern Ireland several years before entering urban gangsta culture, and referred to the nonlethal (but fantastically painful and disabling) practice of firing a firearm at close range into the crook of the knee. The practice served, and in some areas continues to serve, primarily as an intimidation tactic, and the victim becomes a hobbling reminder of what happens to "the enemy."
I told him I'd bust a cap in his ass, but it turns out he didn't have an asscap after all, so I let him go.
by Fiasco November 08, 2004
 
3.
n. bullets
Let's peel some caps back, yo.
by Holden McCrank March 14, 2003
 
4.
n. the caps of psychadelic mushrooms, mushrooms in general
we ate an 1/8 of caps and tripped for hours
by jim June 24, 2003
 
5.
cap
refers to the ignition cap at the base of a cartridge for a firearm. "bust a cap" means break the cap by pulling the trigger, setting off the explosion that propels the bullet
"back off befo i cap yo ass!"
by bjg March 09, 2003
 
6.
Caps lock on a computer keyboard. Represents SHOUTING in chat rooms,IRC chats and forums...
'Turn your caps off! It looks like your shouting!'
by Evil-Ernie May 29, 2003
 
7.
part of shrooms
eat these caps
by s September 08, 2003