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1.
A word meaning the plural form of "you," heard most often in Western Pennsylvania or nearby areas. A Middle Atlantic/Northern equivalent to the Southern "y'all." Most often used by older generations.
Are yuns going to Kennywood today?
by Beth C. August 31, 2006
 
2.
It is a plural form of "you," similar to "ya'll." It is NOT just a Pennsylvania thing as many of these definitions say. It is popular in extrememly rural areas of the Ozarks (mostly Missouri/Arkansas) and is not an urban word at all there.
Are yuns goin' to the ballgame tonight?
by saintsation25 October 11, 2010
 
3.
Yun
A character in Street Fighter 3. Yun practices a martial art which seems to be rooted in Kempo, but I'm not certain. He has a (twin?) brother names Yang. Originally Yang was simply an alternate costume for Yun, but they are now separate characters.

Yun is known for his relatively low defense and weak hits, which is balanced by his superb comboability. His most used super is his Genjin, which allows him to enter a Custom Combo mode, similar to that of A-groove in Capcom vs SNK 2. Using Yun requires you to be constantly on the offensive, while being very careful as to not be punished by you're opponents moves. He has no abusable pokes and his priority isn't anything to scream about. This makes him one of the more difficult characters to use. His only practical defensive move is his "Palm Strike". Yun's defensive tactics are pretty much "counter with Palm Strike" or "parry and counter". Yun is really only recommended for advanced players due to the fact that he's severely unbalanced. A good Yun player is usually hard to find (unless you live in a big arcade spot), but fighting one is usually pretty annoying.

NOTE: A watered-down version of Yun is also playable in Capcom vs SNK 2, but he isn't very popular in that game.
"Did you see that guy combo Yun's chain into that CC?"
"Yeah... It did less damage then if he were to just do the CC without comboing..."
by Jimmy March 04, 2005
 
4.
yun
yun, means cloud in chinese and it can also mean a really hot guy with an awfully small penis.
girl1: hey, check yun out! he is soo yummy!
girl2: yeah, not worth it..hes got a tiny ding dong!
by sytfhcgftsdagbh January 05, 2010
 
5.
A Yun is someone who is 110% Asian. I mean they are the most asainly possible creatures on this earth. Often they are seen with nintendo purses and Wii sweatshirts. Their hobbies include video games, oragami, and hanging with other yuns. Sometimes yuns will try to act American, but it doesnt work.
Ibraham: Yo that uber-asian kid was gonna try some weed, but some cool kids ripped him off and sold him a bag of oregano for 30 bucks! and he hid it in his Nintendo bag!

Mike Spor: HAHA! hes such a yuns!
by old man leppold watson May 27, 2009
 
6.
A Southern term for the word "you" when speaking about more than one person.
Yuns guys are pissing me off.
by Klooch April 01, 2005