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Definition of gunmetal noun from the Oxford Advanced American Dictionary

     

    gunmetal

     noun
    noun
    NAmE//ˈɡʌnˌmɛt̮l//
     
    [uncountable]
     
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  1. 1a metal that is a mixture of copper, tin, and zinc
  2. 2 a dull, blue-gray color
See the Oxford Advanced Learner's Dictionary entry: gunmetal