Definition of walker noun from the Oxford Advanced American Dictionary

     

    walker

     noun
    noun
    NAmE//ˈwɔkər//
     
     
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  1. 1 a person who walks, usually for pleasure or exercise The coastal path is a popular route for walkers.
  2. 2a fast, slow, etc. walker a person who walks fast, slow, etc.
  3. 3 a metal frame that people use to help them to walk, for example people who are old or who have something wrong with their legs He now needs a walker to get around.
  4. 4 a frame with wheels and a harness for a baby, which allows them to walk around a room, supported by the frame
See the Oxford Advanced Learner's Dictionary entry: walker