deal a death blow(redirected from dealt a death blow)
deal a death blow
1. To strike someone (typically with a weapon) and cause immediate death. The warrior swiftly dealt a death blow to his adversary on the battlefield.
2. By extension, to cause the abrupt end of something. His arrest and subsequent conviction dealt a death blow to his successful career as an attorney. Despite the company's recent success, the massive recall dealt it a death blow.