Ruby

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.

The color of a ruby; carmine red; a red tint.

That which has the color of the ruby, as red wine. Hence, a red blain or carbuncle.

See Agate, n., 2.

Any species of South American humming birds of the genus Clytolaema. The males have a ruby-colored throat or breast.

Ruby-colored; red; as, ruby lips.

To make red; to redden.

a transparent deep red variety of corundum; used as a gemstone and in lasers