A synonym for bad, or ugly. Anything that is unwanted.
This computer is so dirty, it doesn't even start.
by J.C. Smet May 8, 2008
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un-coop,un-CLEAN; the opposite of clean.
that is a dirty mutha fucker who wrote the last dirty definition.
by Janitlamason April 11, 2003
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In poker, a flop containing all low cards, usually 10 or lower. In rare circumstances, jacks and even queens can be part of a "dirty" flop.

Can also be used sarcastically with a very top-heavy flop.
Dealer: "Three players to the flop. Percy will be first to act."

(Flop comes Ts, 3h, 5d)

Percy: "Dat shit is dirty!"
Everyone: "Oh Percy!"
by House Housington June 22, 2005
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In electronic dance music circles, especially Techno and Drum & Bass, an adjective used to describe a hard, filtered sound to a song or drum loop. usually a positive statement. see ill or grimey.
It's my favorite track right now - the bassline is fuckin' dirty as hell!
by oolong August 20, 2005
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a person who doesn't shower for long periods of time
That guy's hair was do greasy he must be a dirty.
by asdfghjkl(; June 9, 2009
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Racist term used to denote person of Hispanic origin who has emigrated to the United States illegally; a beaner.
I want to move to El Paso, but they've got too many dirties there.
by Brown Sugar March 21, 2003
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