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What made Irish playwright Sean O'Casey famous with that line: see below -- presumably a misuse of the word chaos.
The whole world's in a state of chassis!
chassis by Johneeeeeeeee May 23, 2008
1. Noun: The female backside. Rumpshaker. Booty. Moneymaker. Ass. Heinie. Rear-end.

2. Noun: A superior hindquarters, usually on a well-proportioned female.
"Check out the chassis on that brunette hottie by the jacuzzi."
Chassis by YODA November 22, 2004
Chassis, usable in any situation. There is no bad time to say "chassis"
"whats up"
"chassis"
"cool"
Chassis by chassismeister November 17, 2011
He is very huge, and is a little sped. But he is also a very nice guy
You are looking huge like
Chassis rn
Chassis by hugemanzeem April 20, 2021
Shit idk Phineas sang about it in Across the 2nd Dimension
"Lets kick some robot chassis."
Chassis by AwwwNawww March 30, 2025

Chassis boys

Just a group of fellas who respect the frame of a car.
Good golly! The Chassis boys started a lynch mob.

That kid is going ape shit. He must certainly be a chassis boy.
Chassis boys by EmpireBart January 22, 2019
More from Urban Dictionary
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
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