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English definition of “mob”

mob

noun [+ sing/pl verb]     /mɒb/ US  /mɑːb/
[C] usually disapproving a large , angry crowd , especially one that could easily become violent : The angry mob outside the jail was/were ready to riot . a lynch mob 50 people were killed in three days of mob violence .Groups of people [C] informal a group of people who are friends or who are similar in some way: The usual mob were/was hanging out at the bar .Groups of people [S] informal an organization of criminals : a New York mob leader → See also mobsterGangsters, thugs and criminal organizations
(Definition of mob noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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