jack
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
A man. — A policeman or detective; (Australia) a military policeman.
Register: slang
Where it’s used:
Used
American English
Examples
When Wardell arrived on the scene, they were surprised to find that he was unshaven, and did not look too happy. One of them remarked: "The 'Jacks' (detectives) are after you."
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “jack” mean?
A man. — A policeman or detective; (Australia) a military policeman.
Is “jack” formal or informal?
jack is generally slang.