from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A lock that will open only when its dial is turned through a predetermined sequence of positions identified on the dial face by numbers or letters.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A type of lock in which a sequence of numbers or symbols is needed to open the lock.
from the GNU version of the Collaborative International Dictionary of English
- n. a lock in which the mechanism is controlled by means of a movable dial (sometimes by several dials or rings) inscribed with letters or other characters. The bolt of the lock can not be operated until after the dial has been so turned as to combine the characters in a certain order or succession.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. lock that can be opened only by turning dials in a special sequence
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