Wiktionary
gothabilly
n. 1 (label en uncountable) A musical genre combining (l/en: rockabilly) and (l/en: gothic rock), and its associated subculture. 2 (label en countable) A member of this subculture.
Wikipedia
Gothabilly
Gothabilly (sometimes hellbilly), is one of several music and cultural subgenres of rockabilly. The name is a portmanteau word that combines gothic and rockabilly. The earliest known use of the word gothabilly was by The Cramps in the late 1970s, to describe their blend of somber, rockabilly-influenced punk rock. Since then the term has come to describe a fashion and music trend that bridges both the gothic and rockabilly subcultures.