picklock

This term carries a strong criminal connotation, specifically associating the act of lock-picking with theft and illicit entry. While a modern professional might be called a locksmith, a picklock is almost exclusively viewed as a rogue or a criminal agent.

When referring to the tool, the word is less common in contemporary speech than "lock pick," but it remains the standard term in historical or literary contexts to describe the specialized instrument used to manipulate a lock's internal mechanism.