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
university
by drl May 22, 2003
1. Shortening of the word "University" (=College)

"I'm got classes at uni this afternoon"

2. A prefix derived from latin meaning "one" or "single"
"A unicycle only has one wheel"
by JJaust September 12, 2006
A replacement for words containing the prefix, "uni-". Has a more negative connotation than mainstream words such as, unitard, unicycle, uniform, unibrow, and the like. To clarify, in speaking to a friend, the term unibrow is more appropriate; for an enemy, unis is fitting.
(replacement of unibrow)
Girl 1: "OMG look at her new default! She's sporting full facial hair-- a stache, beard, AND unis!"
Girl 2: "WTF I would totes hit up the salon so hard if I had a unis!"

(replacement of unicycle)
Girl: "That man is riding a unis throughout campus! What a toolbag!"
by fourthroomie October 12, 2010
Uniformed police officers.
The two unis tag-teamed the banger, playing good cop, bad cop.
by pabrown May 01, 2008
an NYC international school in manhattan and queens that is run for the children of UN staff and peoples and other people. they are smart and preppy but not that snobby. also, they suck at sports.
mom 1- oh my daughteerr is going to brearly
mom 2- oh my daughters not a transvestite, she goes to UNIS and speaks 3 languages...beat that bitch
by coolchickbeatthat September 25, 2009
When a person quickly and sharply slaps another person in the forehead, creating one of those classic "what the hell?" moments, which always tend to be fun.
RULES:
1. You MUST say unis when performing a unis on somebody. It is pronounced (yoo-nIS).
2. It is MANDATORY that it be on the forehead. If it is anywhere else on the body, it is null and void.
3. It is IMPERITIVE that it be a slap. Don't punch people in the forehead. You'll look like a complete retard, and it won't count anyways, so it'll just be a big lump of fail.
Dustin: (slaps John on the forehead) UNIS!
Jonathan: Damnit Dustin! What'd I tell you about that?
Kreig: (also slaps John on the forehead) Unis!
Jonathan: SON OF A BITCH!!
by TheGrimReefer986 May 16, 2011
A single Brow on one's face, some might choose to laser off after 8th grade.
Kirsten, from the 719, Sported a Uni until highschool, now only traces remain.
by Ron.E April 10, 2006

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