Definition of coup noun from the Oxford Advanced American Dictionary

     

    coup

     noun
    noun
    NAmE//ku//
     
    (pl. coups
    NAmE//kuz//
     
    )
     
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  1. 1(also coup d'état) a sudden, illegal, and often violent change of government He seized power in a military coup in 2008. to stage/mount a coup an attempted coup a failed/an abortive coup She lost her position in a boardroom coup (= a sudden change of power among senior managers in a company).
  2. 2 the fact of achieving something that was difficult to do Getting this contract has been quite a coup for us. He pulled off a major diplomatic coup by winning agreement from all the warring factions on a permanent ceasefire.
See the Oxford Advanced Learner's Dictionary entry: coup