Short for unisuit, a one piece spandex thing worn mostly by rowers. It is basically what you would get if you took a pair of spandex shorts and joined it to a (spandex) tank-top at the waist. Rowers/coxswains racing uniforms are almost exclusively unis, however they are also worn for training. Often racing unis are printed in a similar pattern to the team in question's oars, or at least in the same colors. Usually the shorts part is longer than normal spandex, like mid thigh, so they give you seriously annoying tan lines because they are hard to hide. Dress shopping is seriously annoying with a uni-tan. They also make it hard to pee.
We aren't allowed to wear our racing unis until race day.

Getting new unis is the best!

Damn uni-tan, guess I won't be doing booty shorts this summer.
by Liz-423 July 19, 2013
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An internatonal school in New York City, on 23st. They don't wear uniforms and seem like they are a public school, but they

aren't. Much less snobby, sucks at sports. K- 12 but many leave in high school. Stands for "United Nations International School."
"I'm going to UNIS!"

"Oh, I go to Dalton." *shuns*
by Margarrita June 14, 2010
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1.a unibrow
2.someone with a unibrow
1.Holy Shit that beast has a Uni
2.Uni has to count using fingers and toes.
by Dan December 19, 2003
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University of Surrey, (Guildfrod)
I posted this coz someone else tagged UniS
by Last Chancer October 23, 2006
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The traditional spandex uniform of rowers worldwide, much like the singlet of wrestling. Extremely unflattering even to the fittest of athletes, frequent usage in the sun also results in a "uni-tan."
The rowers' unis were black with a green stripe down each side.
by Jocy April 24, 2007
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to do something half assed and lie about it, say you finished something when you really didn't.
Matt pulled a uni when he said he finished writing the song, but didn't really.
by mastamizzle March 12, 2007
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