American English

Definition of open noun from the Oxford Advanced American Dictionary

     

    open

     noun
    noun
    NAmE//ˈoʊpən//
     
    the open [singular]
     
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    outdoors
  1. 1outdoors; the countryside Children need to play out in the open.
  2. not hidden
  3. 2 not hidden or secret Government officials do not want these comments in the open. They intend to bring their complaints out into the open.
See the Oxford Advanced Learner's Dictionary entry: open