ruby > define

A transparent piece of ruby that has been cut and polished and is valued as a precious gem.
A transparent deep red variety of corundum; used as a gemstone and in lasers.
A deep and vivid red color.
- synonyms: crimson, deep red

Of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies.
- synonyms: red, reddish, ruddy, blood-red, carmine, cerise, cherry, cherry-red, crimson, ruby-red, scarlet

(n.) Any species of South American humming birds of the genus Clytolaema. The males have a ruby-colored throat or breast.
(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.) See Agate, n., 2.
(v.t.) To make red; to redden.
(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.
(a.) Ruby-colored; red; as, ruby lips.

by Webster's Revised Unabridged Dictionary

Ruby is a feminine given name