From Longman Dictionary of Contemporary EnglishRelated topics: Jewellery, Coloursrubyru‧by /ˈruːbi/ noun (plural rubies)1[countable]DCJ a red jewel2 (also ruby red) [uncountable]CC a dark red colour —ruby adjectiveExamples from the Corpusruby• How about a ruby and diamondclusterring that Frank Sinatra gave Lana Turner?• And under the plate, among the spinningwheels, diamonds and rubies do battle against friction.• In pearls and rubiesrich the hawthorns show, While through the ice the crimsonberriesglow.• There weren't any rubies of large size in that period.• When Sophie praised a necklet of rubies that she was wearing, it appeared to give him great pleasure.• All there was around her was endless waves of ruby and ice with the fog crawling beneath her feet.Originruby(1300-1400)Old Frenchrubis, rubi, from Latinrubeus“reddish”