four-fifth 

noun, slang.

an urban or slang term used to describe a .45 caliber pistol.

origin: southeastern Virginia (Virginia Beach/Norfolk), Newport News

"hit 'em with the neener man/
or that four-fifth guaranteed to lean ya, man, whoa" - Malice of the Clipse, on Baby's "What Happened To That Boy"

four-fifth by C_Smith May 12, 2006

four fifth 

A .45 caliber handgun or pistol, usualy used in urban slang such as rap.
Common to words such as tre deuce being a .32, deuce deuce being a .22.

"Looked up and I seen Swift shootin it out
But I can't see who he's shootin it out with
But Denaun's right behind him squeezin his four fifth"

-Eminem (one shot 2 shot)

four fifth by chris November 15, 2004

four fifth 

a .45 handgun

must write 20 letters
must write 20 letters
must write 20 letters

i keep my four fifth tucked in my button up

four fifth by thebay707yeeyeeyee! April 14, 2006

four fifth 

a .45 pistol.

i capped yo ass with a four fifth.

four fifth by Anonymous October 5, 2003

Four Fifths Commish 

What Derek Huff will charge as commission to sell a house of a friend because in his words, "that's what gets my dick hard"

Kush: Hey I need to sell my house robey
Robey: Well for you I will only charge four fifths commish because I am currently only at half mast

Four Fifths Commish by J Dog12 March 27, 2009

Four Fifteens 

A slang word most commonly used in modern african american culture referencing four fifteen inch subwoofer car speakers.

ay nigga my four fifteens woke up yo neighbors.

Four Fifteens by DROverdosed89 November 25, 2009

four fifths 

another word used in place of saying forty five, a colt 45 gun.

man i got in the club with the four fifths, let some shit pop off iam ready.

four fifths by bert2 July 10, 2005