Definition of revolving door noun from the Oxford Advanced American Dictionary

     

    revolving door

     noun
    noun
     
     
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  1. 1a type of door in an entrance to a large building that turns around in a circle as people go through it
  2. 2used to talk about a place or an organization that people enter and then leave again very quickly These schools suffer from a revolving door of young teachers who leave for higher-paying jobs.
See the Oxford Advanced Learner's Dictionary entry: revolving door