·noun ·see Agate, ·noun, 2.
II. Ruby ·adj Ruby-colored; red; as, ruby lips.
III. Ruby ·noun The color of a ruby; carmine red; a red tint.
IV. Ruby ·vt To make red; to Redden.
V. Ruby ·noun That which has the color of the ruby, as red wine. Hence, a red blain or carbuncle.
VI. Ruby ·noun Any species of South American humming birds of the genus Clytolaema. The males have a ruby-colored throat or breast.
VII. Ruby ·noun 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.