a pure transparent red corundum, also RUBIN, RUBINE [n RUBIES] / red like a ruby [adj RUBIER, RUBIEST] / to redden [v RUBIED, RUBYING, RUBIES]
of a deep-red color [adj RUBIER, RUBIEST] / to tint with the color of a ruby (a deep-red precious stone) [v RUBIED, RUBIES, RUBYING]