coup de grâce

Từ điển Oxford Advanced Learner 8th

coup de grâce [coup de grce] BrE [ˌkuː də ˈɡrɑːs] NAmE [ˌkuː də ˈɡrɑːs] noun singular (from French, formal)
1. an action or event that finally ends sth that has been getting weaker or worse
•My disastrous exam results dealt the coup de grâce to my university career.
2. a hit or shot that finally kills a person or an animal, especially to put an end to their suffering
Syn: ↑death blow