Type Word Usage Old Irish Meaning & History Old Irish word meaning "queen" (feminine form of rí) [1]. Related ItemsDetails Other Languages & Culturesrīxs(Old Celtic) ri(Old Welsh) Given Name DescendantsRíona, Ríonach(Irish) Morrígan, Mórríghan, Mór-Ríoghain, Ríghnach, Ríoghnach(Irish Mythology) Sources & References Matasović, Ranko. Etymological Dictionary of Proto-Celtic. Brill, 2009, page 311.