Cousin Jack
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
A Cornishman.
Register: dated, slang
Where it’s used:
Used
American English
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “Cousin Jack” mean?
A Cornishman.
Is “Cousin Jack” formal or informal?
Cousin Jack is generally dated, slang.