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ruby

Pronunciation: /ˈruːbi/
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Definition of ruby

noun (plural rubies)

  • 1a precious stone consisting of corundum in colour varieties varying from deep crimson or purple to pale rose: a necklace of rubies [as modifier]:a ruby eternity ring
  • [mass noun] an intense purplish-red colour: [as modifier]:the rich ruby liquid [in combination]:this wine has a youthful ruby-red colour
  • 2 [mass noun] Printing an old type size equal to 5 1/ 2 points.

Origin:

Middle English: from Old French rubi, from medieval Latin rubinus, from the base of Latin rubeus 'red'

ruby in other Oxford dictionaries

Definition of ruby in the US English dictionary