Century Dictionary and Cyclopedia
- n. A small round pin used in certain locks to prevent any but the right key from operating the lock. The pin is in two parts, and the joint must be brought into line with the joint between the case and the key-barrel before the latter will turn. These pin-tumblers are used in Yale locks.
“Although the imprint of the key in the lining of the wallet might not have been clear enough to make an accurate copy of the key, it did at least show that the key fitted a pin-tumbler lock with seven pins.”
“Virtually all conventional pin-tumbler locks are vulnerable to this method of attack, and frankly nobody has really considered it or looked at it before.”
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