heavyweight - definition and synonyms

noun [countable] 

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/ˈheviˌweɪt/
singularheavyweight
pluralheavyweights
  1. 1
    a boxer or wrestler in the heaviest weight group
    1. a.
      [only before noun] relating to this weight group

      the world heavyweight champion

      a heavyweight title fight

  2. 2
    someone or something that has a lot of influence, status, or knowledge