释义 |
DictionarySeedeadboltDead bolt
dead bolt[′ded ‚bōlt] (design engineering) A lock bolt that is moved directly by the turning of a knob or key, not by spring action. Dead boltA bolt with a square head controlled directly by the key when moved in either direction.dead bolt dead bolt A type of door lock; the bolt, which is square in cross section, is operated by the door key or a turn piece. |