American English

Definition of astern adverb from the Oxford Advanced American Dictionary

     

    astern

     adverb
    adverb
    NAmE//əˈstərn//
     
    (technology)
     
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  1. 1in, at, or toward the back part of a ship or boat with the wind and waves astern
  2. 2if a ship or boat is moving astern, it is moving backward
See the Oxford Advanced Learner's Dictionary entry: astern