1) American hip hop genre 2) Southern style of rap 3) Style of Southern hip-hop 
Crunk or krunk is a style of hip hop music that originated in Memphis, Tennessee in the early 1990s and gained mainstream success around 2003–04. Performers of crunk music are sometimes referred to as `crunksters`. Crunk is often up-tempo signifies one of southern hip hop`s more club oriented sub genres.{clarify|date=August 2014|reason=That`...
• (v. i.) Alt. of Crunkle
Crunk (krŭnk), Crun'kle (krŭn'k'l) intransitive verb [ Confer Icelandic kr...nka to croak.] To cry like a crane. [ Obsolete] 'The crane crunketh .' Withals (1608). 
combination of crazy and drunk
A style of Southern hip-hop featuring heavy bass and aggressively chanted lyrics