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Definition of silo noun from the Oxford Advanced American Dictionary

     

    silo

     noun
    noun
    NAmE//ˈsaɪloʊ//
     
    (pl. silos)
     
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  1. 1a tall tower on a farm used for storing grain, etc.
  2. 2an underground place where nuclear weapons or dangerous substances are kept
  3. 3an underground place where silage is made and stored
See the Oxford Advanced Learner's Dictionary entry: silo