safety lock

Từ điển Oxford Learners Wordfinder Dictionary

noun

1. a bolt that cannot be moved from outside the door or gate
• Syn:
safety bolt
• Hypernyms:
bolt, deadbolt
2. guard consisting of a locking device that prevents a weapon from being fired
• Syn:
safety catch
• Hypernyms:
guard, safety, safety device
• Part Holonyms:
gun