combination lock

noun
a lock opened by rotating one or more specially marked dials a given number of times through a particular set of positions in a prescribed order and direction.

Origin:
1850–55

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To combination lock
Collins
World English Dictionary
combination lock
 
n
a type of lock that can only be opened when a set of dials releasing the tumblers of the lock are turned to show a specific sequence of numbers

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Example sentences
The top of the sphere was adorned with a combination lock.
He walked over to a steel door and rapidly twirled the combination lock to open
  it.
Comprehensive knowledge of lock construction and the principles of key and
  combination lock operation.
Health records will be stored by the contractor under combination lock,
  limiting access.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature