Definition of grinder noun from the Oxford Advanced American Dictionary

     

    grinder

     noun
    noun
    NAmE//ˈɡraɪndər//
     
     
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  1. 1a machine or tool for grinding a solid substance into a powder a coffee grinder
  2. 2 a person whose job is to make knives sharper; a machine that does this see also organ grinder
  3. 3 = submarine sandwich
See the Oxford Advanced Learner's Dictionary entry: grinder