Definition of chum noun from the Oxford Advanced American Dictionary

     

    chum

     noun
    noun
    NAmE//tʃʌm//
     
     
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  1. 1[countable] (old-fashioned) (informal) a friend an old school chum
  2. 2[uncountable] small pieces of fish that are thrown into the water from a boat in order to attract other fish that will be caught
See the Oxford Advanced Learner's Dictionary entry: chum