Definition of testing ground noun from the Oxford Advanced Learner's Dictionary

     

    testing ground

     noun
    noun
    BrE
     
    ; NAmE
     
     
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  1. 1a place or situation used for testing new ideas and methods to see if they work Eastern Europe has been a testing ground for rapid economic reform.
  2. 2a place used for testing machines, etc. to see if they work correctly a piece of land in use as a tank testing ground
See the Oxford Advanced American Dictionary entry: testing ground