ruby

[roo-bee]
noun, plural rubies.
1.
a red variety of corundum, used as a gem.
2.
something made of this stone or one of its imitations, as a bearing in a watch.
3.
a deep-red port wine.
4.
deep red; carmine.
5.
British Printing. a 5½-point type, nearly corresponding in size to American agate.
adjective
6.
ruby-colored: ruby lips.
7.
containing or set or adorned with a ruby or rubies: a ruby necklace.

Origin:
1275–1325; Middle English rubi (noun) < Old French < Old Provençal robi(n) < Medieval Latin rubīnus (lapis) red (stone), derivative of Latin ruber red1

rubylike, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
ruby (ˈruːbɪ)
 
n , pl -bies
1.  a deep red transparent precious variety of corundum: occurs naturally in Myanmar and Sri Lanka but is also synthesized. It is used as a gemstone, in lasers, and for bearings and rollers in watchmaking. Formula: Al2O3
2.  a.  the deep-red colour of a ruby
 b.  (as adjective): ruby lips
3.  a.  something resembling, made of, or containing a ruby
 b.  (as modifier): ruby necklace
4.  (modifier) denoting a fortieth anniversary: our ruby wedding
5.  (formerly) a size of printer's type approximately equal to 5½ point
 
[C14: from Old French rubi, from Latin rubeus reddish, from ruber red]
 
'ruby-like
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

ruby
c.1300, from O.Fr. rubi, from M.L. rubinus lapis "red stone" (cf. It. rubino), from L. rubeus "red," related to ruber (see red). Mod.Fr. rubis is prop. the plural of rubi, mistaken for sing.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
ruby   (r'bē)  Pronunciation Key 
A deep-red, translucent variety of the mineral corundum, containing small amounts of chromium and valued as a gem. Compare sapphire.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Easton
Bible Dictionary

Ruby definition


(Heb. peninim), only in plural (Lam. 4:7). The ruby was one of the stones in the high priest's breastplate (Ex. 28:17). A comparison is made between the value of wisdom and rubies (Job 28:18; Prov. 3:15; 8:11). The price of a virtuous woman is said to be "far above rubies" (Prov. 31:10). The exact meaning of the Hebrew word is uncertain. Some render it "red coral;" others, "pearl" or "mother-of-pearl."

Easton's 1897 Bible Dictionary
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Example sentences for rubies
The marrow of her bones is visible like the interior lines of pearls and rubies.
Chromium is what makes a ruby red, and therefore is used in producing synthetic rubies.
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