Definition of tester noun from the Oxford Advanced Learner's Dictionary

     

    tester

     noun
    noun
    BrE BrE//ˈtestə(r)//
     
    ; NAmE NAmE//ˈtestər//
     
    Shopping in stores
     
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  1. 1a person or thing that tests something testers of new software
  2. 2a small container of a product, such as perfume, that you can try in a shop/store to see if you like it See related entries: Shopping in stores
See the Oxford Advanced American Dictionary entry: tester