brass rat
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
A class ring bearing the image of a beaver, worn by graduates of MIT.
Register: 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 “brass rat” mean?
A class ring bearing the image of a beaver, worn by graduates of MIT.
Is “brass rat” formal or informal?
brass rat is generally slang.