hepcat

Definition

Slang

  • noun an aficionado of jive, jazz and other aspects of progressive popular culture of the 1940s and 1950s. Originally a black term combining hep (fashionably aware) and cat (a man), it was adopted by white bohemians, intellectuals and proto-beatniks and used until replaced by such terms as hipster in the 1960s. British jazz fans also picked up the expression and used it self-consciously or humorously until the mid-1960s.
http://www.dictionarycentral.com/definition/hepcat.html