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

      

    grey

     noun
    (especially British English)(usually North American English gray)noun
    BrE BrE//ɡreɪ//
     
    ; NAmE NAmE//ɡreɪ//
     
     
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  1. 1  [uncountable, countable] the colour of smoke or ashes the dull grey of the sky dressed in grey
  2. 2[countable] a grey or white horse She's riding the grey.
  3. Word Origin Old English grǣg, of Germanic origin; related to Dutch grauw and German grau.