Definition of flash mob in English:

flash mob

noun

  • A large public gathering at which people perform an unusual or seemingly random act and then disperse, typically organized by means of the Internet or social media.

    ‘equipped with cameras and LED lights, a flash mob of 135 people appeared out of nowhere to put on a performance’

Phrases

  • flash mobbing

      • ‘I don't think there's any place that is immune from flash mobbing.’
      • ‘Flash mobbing is fast developing into the nation's favourite hobby.’
      • ‘The Python-esque incident was thought to have been Britain's first brush with flash mobbing - a trend which started in the United States.’
      • ‘Despite the planning that goes into making a flash mob, there is something inherently anarchic about flash mobbing.’
      • ‘Whether traditional British reserve will wobble in the face of flash mobbing is unclear.’