Added 9 October 2026 grayback noun Categories: AnimalsObscure Words noun ! Definition from Wiktionary (CC BY-SA). More about grayback at Wordnik → Where our words come from → Alternative spelling of greyback. Origin From gray + back. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: knotrebrebeljohnnygreyheadgraylaggraybeardyellow-back Back to today's word