Available Definitions:
1) 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.
2) n. - The color of a ruby; carmine red; a red tint.
3) n. - That which has the color of the ruby, as red wine. Hence, a red blain or carbuncle.
4) n. - See Agate , n., 2.
5) n. - Any species of South American humming birds of the genus Clytolaema. The males have a ruby-colored throat or breast.
6) a. - Ruby-colored; red; as, ruby lips.
7) v. t. - To make red; to redden.