English

Definition of ruby noun from the Oxford Advanced Learner's Dictionary

     

    ruby

     noun
    noun
    BrE BrE//ˈruːbi//
     
    ; NAmE NAmE//ˈruːbi//
     
    (pl. rubies)
     
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  1. 1 [countable, uncountable] a dark red precious stone a ruby ring
  2. 2 [uncountable] a dark red colour
  3. Word Origin Middle English: from Old French rubi, from medieval Latin rubinus, from the base of Latin rubeus ‘red’.

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