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Definition of heavy-duty adjective from the Oxford Advanced American Dictionary

     

    heavy-duty

     adjective
    adjective
     
    [only before noun]
     
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  1. 1not easily damaged and therefore suitable for hard physical work or to be used all the time a heavy-duty carpet
  2. 2(informal) very serious or great in quantity I think you need some heavy-duty advice.
See heavy-duty in the Oxford Advanced Learner's Dictionary
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