Bump-key Definition
noun
A lockpicking tool in the form of a key of the type generally used to open a lock, on which all pin position have been cut down to the lowest position, so that striking this key sharply with a hammer while applying turning force at just the right instant after the impact will 'bump' open a lock.
Wiktionary
Other Word Forms of Bump-key
Noun
Singular:
bump-key
Plural:
bump-keys
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