deadbolt

About 0.05 uses per million words.

Meaning

1. noun The part of the lock which is moved when the key is engaged.
2. noun A kind of lock in which the bolt (moving portion) is held in position by the cylinder rather than by a spring and so cannot be retracted except by turning the cylinder.
3. verb To fasten or secure with a deadbolt.

Similar words

bolt key bolt blade bitting heck tailpiece keeper limb knob lock detent

Often followed by

lock locks and on is was with to that