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A bolt on a lock that shifts only when the key or a small knob on one side of the lock is turned.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. a locking bolt that is turned by the key rather than a spring
a. a type of lock that utilizes a bolt that has to be turned manually rather than by a spring
b. (as modifier): deadbolt locks.
3. (as modifier): deadbolt locks.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



a lock bolt that is moved into position by the turning of a knob or key rather than by spring action.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.deadbolt - the part of a lock that is engaged or withdrawn with a keydeadbolt - the part of a lock that is engaged or withdrawn with a key
bar - a rigid piece of metal or wood; usually used as a fastening or obstruction or weapon; "there were bars in the windows to prevent escape"
lock - a fastener fitted to a door or drawer to keep it firmly closed
safety bolt, safety lock - a bolt that cannot be moved from outside the door or gate
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˈdedbəʊlt] Ncerrojo m de seguridad
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
References in periodicals archive ?
Deadbolts, one of the segments analyzed and sized in this study, displays the potential to grow at over 14.5%.
I have double-cylinder deadbolts on my front and back doors: the kind that require a key on the inside, as well as outside.
The patio door also has two deadbolts. But only one deadbolt can be seen on the outside, so it helps with a resident's security.
* Install locks and deadbolts at the top and bottom of patio doors and French windows to prevent them from being forced open.
- Install deadbolts. Many robbers will break windows to unlock doors, but deadbolts that require keys will prevent this.
This 48-inch tall safe has an electronic lock on the front and is secured with five 1 1/2-inch live-action locking bolts, three deadbolts and is fire-resistant for 30 minutes at 1,400 degrees.
The raider removed the handle and lock barrel from the upvc door but failed to get in because deadbolts were fitted.
While one resident said she was concerned because prisoners are working at Bigelow Gardens, where residents cannot have deadbolts on their doors to allow easier access for emergency medical workers, town officials are not concerned.
The official said the device will be used as an emergency entry tool to quickly and safely shear through security bars, bolts and pins and cut through lock faces, destroy padlocks and deadbolts and breach through locked doors, without creating flying projectiles.
DEADBOLTS. Deadbolts--locking mechanisms providing more security than conventional locks--should be used to prevent access to critical areas, as well as to other "off-limits" areas.
Ned DeWitt, the product manager for crew served weapons at the Armament Research, Development, and Engineering Center at Picatinny Arsenal, New Jersey, "The M1030 is an antimaterial cartridge designed to be used for defeating wooden doors (deadbolts, knobs, and hinges) and padlock hasps....