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.
a. - Ruby-colored; red; as, ruby lips.
v. t. - To make red; to redden.