deadbolt
🇺🇸
/ˈdedbəʊlt/
🇬🇧
/ˈdedbəʊlt/
A deadbolt is a strong lock on a door that you can only open with a key. It makes your door more secure.
Before going on vacation, she double-checked that the deadbolt was locked on the front door.
在度假前,她再次檢查前門的死鎖是否已經鎖上。