"You" in its plural form. Originated in the south but has equivalent counterparts in other languages such as German.
For instance, in German one might say :
"Wie geht's mit ihr?"
or in English:
"How's it going with y'all?"
In German Ihr is an official part of speech...something to consider! People who denouce the term "Y'all" are just hatin' on the more enlightened!
Oh yeah, and "Ya'll" is completely wrong. NEVER use it.
Y'all better come hit this!
Y'all want to go grab some sushi?
So, what do y'all think about the legitimacy of the new Iraqi government.
Don't y'all think Bush sounds like an ignorant asshole?!
by Mae Ella March 23, 2006
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the extra plural form of y'all. Refers to at least ten people.
Y'alls in the same family? Well, I'll be switched!
by T-Dog Jenkins July 15, 2005
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Plural form of the word "y'all"

Side note: "y'all" can be used as a singular or plural second-person pronoun, so this word's usage is usually restricted to ultimate memester talk.
Person 1 (Talking to one person): y'all dunno nun b
Person 2 (Talking to a group): whomst of all y'all's would've did this?
by TheGoldstar16 May 23, 2018
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A second-person pronoun that, when in the South, is incredibly common. It makes much more sense than "You Guys" and other counterparts, for it takes only one syllable and, therefore, less breath. Can mean one person or several people, but usually refers to the latter. Sounds utterly ridiculous when said with an accent other than Southern or a plain American, all around accent. Oft times mocked by the rest of the country, while we southerners laugh at their wanting of "a grit" and their accents.
Y'all not comin' to school?
So... y'all want to bring your girlfriend?
Y'all's accent's funny.
by Sarah Notelin January 31, 2006
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The incorrect plural form of y'all. The correct plural version is "all y'all"

"All y'all are to dumb ta be hicks, y'all don't even know how ta talk... garsh, what the hell is y'alls supposed ta mean?"
by carter72 November 15, 2008
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When having a cell phone conversation the person on the other end of the call says y'all (alternatively spelled as yall) every few words in a desperate attempt to sound southern when in actuality they are from somewhere like New York. For people who say y'all naturally (i.e. real southerners), this is a painful conversation.

It is important to note that this particular "y'all" is obviously fake and can be distinguished by such characteristics as a noticeable pause between the "y" and the "all" because the poser cannot even grasp the basic pronunciation of the word, and by their grammatically incorrect use of it to refer to only one person, when in fact y'all is one of the contracted forms of the second person plural "you all."
(On cell phones.)

Poser: Hey Y'ALL, how are Y'ALL doing? Y'ALL, I was just calling to tell Y'ALL that I wanted Y'ALL to do me a favor. Could Y'ALL... (it can go on forever!)

Poser's Dad: What the hell? You're from New York. Stop y'alling, you poser! *Hangs up in frustration.*
by Oh my gosh, it's Bran! January 24, 2008
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I can't believe all these ignorant people defending the fact that they use "yall" ...actually yall sound stupid saying that, and I feel stupid myself for having just used it. whoever uses it sounds like a hillbilly redneck, and all these people saying it sounds cool or whatever, ya just keep telling yourselves that for sounding stupid..
lets go bull riding y'all!! heeee haaaaa!!!!
by olaa chica May 18, 2016
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