Definition of bob noun from the Oxford Advanced American Dictionary

     

    bob

     noun
    noun
    NAmE//bɑb//
     
     
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  1. 1a quick movement down and up of your head and body a bob of the head
  2. 2a style of a woman's hair in which it is cut the same length all the way around She wears her hair in a bob.
  3. 3 = bobsled
See the Oxford Advanced Learner's Dictionary entry: bob