English version

death blow

From Longman Dictionary of Contemporary Englishdeath blowˈdeath blow noun [singular]  an action or event that makes something fail or enddeath knell His decision to leave the show has delivered a death blow to the series.
Examples from the Corpus
death blowNeither, however, will be a death blow.Was it however so paradoxical as to have dealt a death blow to the theory?The fact that they have seen nothing is by no means an immediate death blow for all grand unified theories.The death blow to drug chic actually may have been struck by a fast-food chain.The death blow to the Aksumite kingdom came in the tenth century from unassimilated Agaw in the south.
Pictures of the day
Do you know what each of these is called?
Click on the pictures to check.