Definition of black flag noun from the Oxford Advanced Learner's Dictionary


    black flag

    BrE BrE//ˌblæk ˈflæɡ//
    ; NAmE NAmE//ˌblæk ˈflæɡ//
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  1. 1a black flag used in motor racing to stop a driver who has done something wrong
  2. 2a flag with a skull and crossbones on it
See the Oxford Advanced American Dictionary entry: black flag