1. mod. wild; crazy; out of control. (The word itself has many uses, each freshly misunderstood or derived earlier senses. It could be a blend of crud + junk, crazy + drunk, or other words, such as being a pseudo past participle of crank cocaine. There is an “energy drink” called crunk, and it claimed that the whole phenomenon is related to an extremely energetic Atlanta hip-hop star.) He’s acting crunk. Don’t let him drive!
2. mod. drunk. They went out and got totally crunk to celebrate.
3. mod. hip; cool; totally excellent. Man, this CD is crunk!
4. in. to get excited or hyped up. This brother is really crunking.