Deadbolt meaning

dĕd'bōlt'
A bolt on a lock that is moved by turning the key or knob without activation of a spring.
noun
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A lock for a door, with a square-headed bolt that can be moved only by turning the key or a knob: it has no spring.
noun
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The part of the lock which is moved when the key is engaged.
noun
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A kind of lock in which the bolt (moving portion) is held in position by the cylinder rather than by a spring and so can not be retracted except by turning the cylinder.
noun
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To fasten or secure with a deadbolt.
verb
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