Definition of flash mobbing noun from the Oxford Advanced Learner's Dictionary


flash mobbing

BrE BrE//ˈflæʃmɒbɪŋ//
; NAmE NAmE//ˈflæʃmɑːbɪŋ//
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an activity in which a large group of people arrange (by mobile/cell phone or email) to gather together in a public place at exactly the same time, spend a short time doing something there and then quickly all leave at the same time