Definition of horseback adjective from the Oxford Advanced American Dictionary

     

    horseback

     adjective
    adjective
    NAmE//ˈhɔrsbæk//
     
    [only before noun]
     
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  1. sitting on a horse a horseback tour
  2. horsebackadverb
     
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  3. to ride horseback
See the Oxford Advanced Learner's Dictionary entry: horseback