D defs.my
Entry 2 senses Webster, 1913

hepcat

/(hĕp"kăt`)/ · hep·cat · IPA
01 n. One who performs jazz music.
  1. 1.
    One who performs jazz music.[slang]
  2. 2.
    A person who is hep or hip; same as hipster; -- an older term becoming dated and less used.[slang] See: hipster