Type Word Usage Old Irish Meaning & History Old Irish word meaning "great, big" [1]. Related ItemsFamily Tree·Details Other Languages & Culturesmāros(Old Celtic) maur(Old Welsh) Given Name DescendantsMorrígan, Mórríghan, Mór-Ríoghain(Irish Mythology) Mór(Medieval Irish) Mòr(Scottish Gaelic) Same Spellingmór 2, mor 1, mor 2, mor 3 Sources & References Matasović, Ranko. Etymological Dictionary of Proto-Celtic. Brill, 2009, page 258.