Adjective: A Southern U.S. Hip-Hop term for describing the level of excitement at an event or an excitable attitude.
Verb: Provoke excitement.
Noun: Southern U.S. Hip-Hop music using electronic drum sounds and synthesized brass instruments. Made most popular by Lil Jon and the Eastside Boys.
"That party was crunk! People were shooting and two cats who were trying to get crunk got shot. They were playing crunk like Young Joc and Dem Franchise Boys. That's what I think really crunked-up the party.
by CoknI O'Dire July 18, 2006
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Contrary to popular belief, crunk is actually the words "crazy" and "funk" put together. It is not as recent a word as many think; it has been used in rap as early as 1995, but it was popularized by Lil Jon and the Eastside Boyz much more recently.
by jar March 12, 2005
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Crunk (or krunk) is a specific type of hip hop music, based out of the southern United States, particularly Atlanta, Georgia. While most crunk-style music could be called "Dirty South" or southern rap, the reverse is not necessarily true. Eightball & MJG for example have a more "Southern funk" sound.

ALSO

crunk adj 1. extremely fun. ("That party was so crunk that I didn't want to end it .") 2. excited, hyper; eager to go out and do something.

1. Lets get this thang crunk.
1. Lil jon makes "Crunk" music.
2.Let's get this party CRUNKKK!!!
by XXoXx2CUTE4UXoXx April 7, 2005
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A combo of "Crap" and "Junk", Crunk denotes something that is bad, no good, and shabby.
"Those Uggs look like Crunk" or "She Wants Revenge is so crunk".
by Reddd Foxxx January 17, 2008
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To get crazy and act a fool.
I got so damn crunk last night, I shot up dat nigga house
by Michael Alvis January 12, 2005
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An inept, baffling "variant" (if you can call it that) of hip hop popularized by Lil' Jon and the Eastsize Boyz, signified by completely rudimentary beats, laughably simplistic riffs, and total production values that make even the worst of dance music listenable in contrast to crunk.
by Sparda January 15, 2005
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The act of being excessivly drunk and high on good 'ol Mary Jane at the same time!
"Yo bob, i went to a bush party last night and was SO crunked!"
by Lauren January 27, 2005
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