Definition of pinprick noun from the Oxford Advanced American Dictionary

     

    pinprick

     noun
    noun
    NAmE//ˈpɪnprɪk//
     
     
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  1. 1a very small area of something, especially light His eyes narrowed to two small pinpricks of black.
  2. 2a very small hole in something, especially one that has been made by a pin The only mark on her was a pinprick left by the injection.
  3. 3something that annoys you even though it is small and unimportant Nausea and tiredness were mere pinpricks compared to the emotional pain she was feeling.
See the Oxford Advanced Learner's Dictionary entry: pinprick