I. ˈrü-bē noun
( plural rubies )
Etymology: Middle English, from Anglo-French rubi, rubin, from Medieval Latin rubinus, from Latin rubeus reddish; akin to Latin ruber red — more at red
Date: 14th century
1.
a. : a precious stone that is a red corundum
b. : something (as a watch bearing) made of ruby
2.
a. : the dark red color of the ruby
b. : something resembling a ruby in color
II. adjective
Date: 1508
: of the color ruby