Cap 

Shoot or kill usually with a weapon.

If he don't stop playin i'm bout to cap him"

Cap by Jesse-H May 31, 2007

Cap 

A unit or dose of GHB (Gamma hydroxy butyrate) which is often stored in water bottles. The cap of the bottle is an easy way to measure about 3-5ml which is the usual first dose.

"I did two caps of this funk (GHB), I'm gonna be fucked up"

Cap by jaxxon911 August 21, 2009

cap 

One's head, one's noggin.

Wit' mah AR 15 and the nozzle up they ass, you can be sure i'll see 'em leakin out they cap!

cap by King Fashizl al-MahNizl April 1, 2003

cap 

something u wear on your head... sometimes if u have a bad hair day.. Usually worn backwords

Diego,, Wearing his Ferrari hat,, lookin sooo cool

cap by Diego March 23, 2003

CAP 

1)Urban slang term for bullet or slug, originating from the noisy but harmless caps used with a child's cap-gun
2) See JAP, substitute "jewish" for "christian"

Japs call some christians CAPs, but JAPS are more annoying!

CAP by Liz January 5, 2004

Cap 

A reference to Captain Sol, a character widely considered the most powerful Tank on the City of Heroes MMORPG. The character is famous for several incredible feats of in-game ability that have become legend among many players. The word is most often said as a statement of surprise or as a comparative explicative.

Did you see that? That was a totally Cap move!

Who the heck do you think you are, man?! Cap?

We could've beaten that AV if we had Cap!

Why would he do a thing like that?! He's Cap.

That was one hard mission! Yeah, a real Cap.

Cap by Jim Hymme October 17, 2006

Cap 

An asshole of astronomical proportions

Go be a Cap and tell that bitch she a slut and has saggy school bus driver titties.

Cap by TheFvckinCaptain March 7, 2017