- a lock bolt that is moved into position by the turning of a knob or key rather than by spring action.
Origin of deadbolt
Also called deadlock.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for deadbolt
She closed the blinds quickly, then went to the door and shot the chain and the deadbolt closed.Someone Comes to Town, Someone Leaves Town</p>