Definition of "gabber"

gabber¹

/ˈɡæb.ə(ɹ)/

noun
plural gabbers
1. (obsolete) A liar; a deceiver.
2. One who is addicted to idle talk.
  Quotations
  The gabbers’ job today, and in the future, is to sneak up on the listening prospect and sell before he knows it.
  1943 November 20, “Gabbers Sell in New Garb”, in The Billboard, Nielsen Business Media, Inc., page 8
3. (US, dated) A radio commentator or disc jockey.

gabber²

/ˈɡæb.ə(ɹ)/

noun
countable and uncountable, plural gabbers
1. (uncountable, music) A subgenre of hardcore techno characterised by an intense, distorted kick sound and controversial lyrics or samples.
  Quotations
  This, in turn, birthed all kinds of mainly regional variations that have lasted from the 90s to today, most notably gabber—a relentless mix of superfast BPMS, distorted kickdrums and roared vocals that evoked the distilled nihilism of Rotterdam skinheads.
  2020 January 10, Joe Muggs, “Gabber: return of dance music’s gloriously tasteless subgenre”, in The Guardian‎
2. (countable) A gabber music lover, usually dressed in a tracksuit, often with a complete shaved head or partially for women, seen primarily in the 1990s.