Diesel 

Around the northern NJ area diesel is a code word for heroin

A brief use of the word in a conversation:

Dealer: Yo what you need man?
Buyer: i'm looking for diesel bro
Dealer: i got you

Diesel by PJ April 8, 2004

Diesel 

A) Strong, huge, ripped, muscular, swole, buff

B) Hella expensive clothing line that sells sexy underwear with "DIESEL" on the front

Dude I havn't seen that guy in 4 months, look at his body! DIESEL!

Diesel by iBJocking February 28, 2012

diesel 

East-Coast slang term for heroin.

I went to Camden last night to get some diesel.

diesel by gangstaaaaaaaaaaa January 15, 2009

diesel 

Budweiser beer (especially in a 24oz. can).

outside QuickTrip, the interior of a 1989 Ford Probe...

Christian: You want something to drink?

Grant: Can of Diesel.

Christian: A 2 by 4?

Grant: That's what I said.

diesel by Edapoe March 15, 2009

Diesel 

The most prominent term for heroin on the urban streets of Philly

The editors at urban dictionary are so out of touch with street slang they don't know a work is used for mainline use of diesel

Diesel by Phmns52 October 16, 2013

diesel 

A brand of jeans and other clothing.

Dam! He looks so hot in his new diesel jeans.

diesel by Caleb November 17, 2003

Diesel 

A slag term used for Budweiser. Not bud light.

A. Hey Johnny can you pass me a Diesel

B. Fuck Bud Light and Natty I wanna rock some Diesel's tonight

Diesel by Johnny Duckets May 3, 2010