fail-safe

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

a mechanism capable of returning to a safe state in case there is a failure or malfunction
• Hypernyms:
mechanism

II - adjective

1. guaranteed not to fail
- a fail-safe recipe for cheese souffle
• Similar to:
secure
2. eliminating danger by compensating automatically for a failure or malfunction
- a fail-safe device in a nuclear weapon to deactivate it automatically in the event of accident
• Similar to:
safe