Definition of lilac noun from the Oxford Advanced American Dictionary

     

    lilac

     noun
    noun
    NAmE//ˈlaɪlæk//
     
    , NAmE//ˈlaɪlɑk//
     
    , NAmE//ˈlaɪlək//
     
     
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  1. 1[uncountable, countable] a bush or small tree with purple or white flowers with a sweet smell, that grow closely together in the shape of a cone
  2. 2[uncountable] a pale purple color
lilacadjective
 
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a lilac dress