n.
Pronunciation: ' rü-b ē
Function: noun
Inflected Form: 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