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20.
Uni
The best years of your life (if you go, that is). Friends, legal drinking, more drugs, actually getting laid rather than pipe-dreaming about it. Clubs, etc! Yet less stupid social peer pressure and immaturity.

And no it doesn't have to be destructive if you can manage to balance your workload. And yeah it costs, big deal. Student loan (which is really a "tax") will be your saviour.

Work hard.
Play harder!
They say "school is the best years of your life" - rubbish.

University is much more fun if you make the best of it. Uni is the place where you can still feel young, yet get adult rights and treatment.

Even the once bullied kids and nerds become social butterflies at university.
by 20 year old student July 12, 2010
 
1.
uni
university
by drl May 22, 2003
 
2.
uni
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
 
3.
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
 
4.
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
 
5.
Uniformed police officers.
The two unis tag-teamed the banger, playing good cop, bad cop.
by pabrown May 01, 2008
 
6.
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
 
7.
uni
How the Japanese refer to sea urchin roe.
Iron Chefs use uni in pretty much every other battle.
by edk September 26, 2005