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



    BrE BrE//ˈflæʃə(r)//
    ; NAmE NAmE//ˈflæʃər//
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  1. 1(informal) a man who shows his sexual organs in public, especially in order to shock or frighten women
  2. 2a device that turns a light on and off quickly
  3. 3(North American English) a light on a vehicle that you can turn on and off quickly as a signal four-way flashers (= four lights that flash together to warn other drivers of possible danger)
See the Oxford Advanced American Dictionary entry: flasher