Type Word Usage Old Celtic (Hypothetical) Meaning & History Celtic word meaning "great, big" [1]. Related ItemsFamily Tree·Details Other Languages & Culturesmór(Old Irish) maur(Old Welsh) Given Name DescendantsMór(Medieval Irish) Mòr(Scottish Gaelic) Sources & References Matasović, Ranko. Etymological Dictionary of Proto-Celtic. Brill, 2009, page 258.