(n.) A precious stone of a carmine red color, sometimes verging to violet, or intermediate between carmine and hyacinth red. It is a red crystallized variety of corundum.
(n.) The color of a ruby; carmine red; a red tint.
(n.) That which has the color of the ruby, as red wine. Hence, a red blain or carbuncle.
(n.) See Agate, n., 2.
(n.) Any species of South American humming birds of the genus Clytolaema. The males have a ruby-colored throat or breast.