Ruby \Ru"by\, a. Ruby-colored; red; as, ruby lips.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Ruby \Ru"by\, v. t. [imp. & p. p. Rubied; p. pr. & vb. n. Rubying.]

To make red; to redden. [R.]

--Pope.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Ruby \Ru"by\, n.; pl. Rubies. [F. rubis (cf. Pr. robi), LL. rubinus, robinus, fr. L. rubeus red, reddish, akin to ruber. See Rouge, red.]

1. (Min.) 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.

Note: Besides the true or Oriental ruby above defined, there are the balas ruby, or ruby spinel, a red variety of spinel, and the rock ruby, a red variety of garnet.

Source: Webster's Revised Unabridged Dictionary (1913)