impressioning

Verb

impression (third-person singular simple present impressions, present participle impressioning, simple past and past participle impressioned)

1. To manipulate a blank key within a lock so as to mark it with impressions of the shape of the lock, which facilitates creation of a duplicate key.
   • The trick in impressioning a key is to remove only a small amount of the blank, by filing or cutting, from the pin positions where impressions have been left.2007, Graham Pulford, High-Security Mechanical Locks: An Encyclopedic Reference, page 55

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