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71.
street slang for afghan heroin
ayyo, syed shippin over some of that diesel!
by Da Chef January 07, 2006
 
1.
Awesome or strong, as in physcical power. Also - great, cool, or sexy.
"He's diesel."
"She's diesel."
"Its diesel."
by Randy Roberts January 10, 2003
 
2.
Diesel is the name used to describe the special scent that attracts the opposite sex. Most generally used with a large scale of the opposing sex.
Wow, Bryan is definitely wearing Diesel today. Every girl is all over him.
by B.Wake and P. Money February 22, 2010
 
3.
Diesel is not car fuel and oil mixed together, it's not a type of "gas," it is a lower-grade petroleum distillate used in DIESEL ENGINES which has a much higher flashpoint and whose fumes are non-explosive as opposed to gasoline's. Diesel engines use "compression-ignition" (the heat of highly compressed air in the combustion chamber) to ignite a very fine mist of diesel fuel. Used in heavy-duty trucks, generators, pumps, etc. for their higher specific torque (vs. gasoline) and greater fuel efficiency. Modern diesels are very clean, efficient, smooth, and quieter.
My Ford/Chevy/Dodge truck has a diesel engine which runs on diesel fuel. Neato!
by Hammond B-3 October 30, 2003
 
4.
extremely muscular, huge, big, a bodybuilder
damn, you seen Jamal lately? muthafucka's diesel, man!
by Iluvevans August 17, 2003
 
5.
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
by PJ April 08, 2004
 
6.
Definition #1- Heroin
Definition #2- Big, Muscular, usually someone with alot of muscles.
On my block we pump diesel, sell packs, and pitch crack

My father is so diesel, he makes a tanktop look like a bra
by Race908 August 31, 2006
 
7.
To be unstoppable at something. Bad ass.
Angie Miller is so diesel that she has 18 wheels and doesn't even know it..look out world!
by mcbain02 June 11, 2013