Def

UrbanDictionary.com's abbreviation for 'definition'. See the 'new def' link at the top of the page.

I added a new def today.

Okay, okay, I DO sound stupid.

Def

IS short for definitive. Originated in NY, no doubt.

or

"#3 on your touch tone, D-E-F spells def" either Tak or Ryu of Styles of Beyond...

Def

The hip/gangsta way of saying Death.

According to the Ali G Show,
Ali: "Yo, lets talk about this thing called def man. You know, D-e-f"
Doctor: *my God this man is a complete moron*

Def

Origin: " Definate "
" Def " : To strongly concur with a previously made statement.

Wes: Man i'm bored... is your dealer home?

Mike: Def dude :D.

def it

Old skool version of low it meaning forget it, dont bother or dont even go there but in a nice kinda way

man sez 'bruv, shall we jack the offie'
man&man 'nah def it, its too on top'

def

def /def/ adj. to describe a person, thing, or event that is cool. iarchaic, circa 1981/i

"yo, mah pizzles, I got da hook-up at this def new club. It's suppose ta be off da hizzy"

defs

A short form for the word definetly.

"I'm defs keeping this on the DL."
"Are you going to John's tonight?" - "Defs."