Definition of barn noun from the Oxford Advanced American Dictionary

     

    barn

     noun
    noun
    NAmE//bɑrn//
     
     
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  1. 1a large farm building for storing grain or keeping animals in a hay barn They live in a converted barn (= a barn that has been turned into a house).
  2. 2 a large, plain, ugly building They live in a big barn of a house.
  3. 3 a building in which buses, trucks, etc. are kept when not being used
  4. Idioms
    close, etc. the barn door after the horse has escaped
     
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    to try to prevent or avoid loss or damage when it is already too late to do so
See the Oxford Advanced Learner's Dictionary entry: barn