a term used to describe someones a**hole. or just their general unpleasant demeanor.
"That guy over there is a real Cornwallis."
"Holy crap bro, your breath smells like a bag full of cornwallises!"
"I'm going to kick that guy right in his cornwallis."
by smokey mcsmokersun February 3, 2010
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A small, boring town in upstate New York (or downstate, depending on your point of view. It's an hour away from the city.) It is mostly suburbs, apart from Main Street (where almost everything is closed down) and some rural parts in Mountainville. One of the only interests in Cornwall is sports. The mascot for the schools is, inexplicably, the dragon. Most younger people living in Cornwall will say that they can't wait to get out if it, as there is hardly anything at all to do.

Despite its proximity to Newburgh, there are really no gangs or violence outside of teenage "mischief" and the Maplehurst Inn (home to crazy homeless people, one might say).

It's a solidly middle-class town, but in Cornwall-on-Hudson, it's pretty high-class. It's divided into Cornwall, the Village of Cornwall, Cornwall-on-Hudson (which is along the Hudson river), and Mountainville. It's close to New Windsor, Washingtonville, Salisbury Mills, West Point, and Newburgh.

AKA: C-Wall, Craphole
Person 1: Where are you?
Person 2: Uh, Cornwall?
Person 1: ...
Person 2: It's between Newburgh and West Point.
Person 2: Ohhh...
Person 1: Yeah. It sucks.
by eloquent.observer March 8, 2009
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When you feed your girlfriend nothing but corn, wait for her to shit and half way through fuck her in the ass.
by DaftSpades January 24, 2014
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A remote, uncivilized area that is abundant in low paid jobs, widespread heroin abuse and a high number of semi-derelict towns but is perversely held to be somehow superior by its fat, unintelligible and sanctimonious inhabitants.
Why would you go there? That place is 100% Cornwall.
by Alan Spangler June 24, 2014
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To lead someone on, only to abruptly change your mind by cutting off contact.
I invited this girl to the country for the weekend then totally cornwalled her by not calling.
by Duchess of Brompton May 15, 2011
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When a man presses and rubs a closed fist against his lover's anus for added stimulation during sex.
Jonathan's pinky developed a cramp while fingering Connie's anus, so he simply made a fist and Cornwalled her.
by BB2 June 28, 2013
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A growing town in New York. Next to newburgh New York and the West POint military academy. It's not too far from the city. It's an alright town to live in. Alot of people will tell you they dont like it there but if you have lived somewhere else you will see it's not that boring. It's actually growing alot. ALOT of families are moving in from the city to get their kids away form that atmosphere.Cornwall is usually a very competitive town in every sport.
Not the Cornwall in England. The one in New York!
by what you know bout dat April 17, 2006
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