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Used as an exclamation of pleasure, approval, elation, or victory.
Yay by IAMSODOT March 11, 2004
Related Words
YAY! yayo yay area yayness yayer Yayday yay yo yayaya yayee yayhoo
An exclamation that always needs to be louder. Most often used in conjunction with practicing cheers for a friends national competition.
RD: So now that you know the elements of a good cheer, lets hear one!
FS: *softly* yay
RD: Louder!
FS: *still softly* yay
RD: Louder!
FS: *again, softly* yay
RD: LOUDER!
FS: *Deep breath in, preparing for a loud cheer.* *Softly* yay
yay by serialman August 31, 2012
n;
Slang for Cocaine, popular in California's Bay Area.

Syn;
blow,coke,snow.
I'm so strung out from all the yay last night
Yay by Bookworm February 2, 2005
A slag word for cocaine mostly used in Southern California
I was pounding some yay last night
Yay by Bigbankroll562 December 21, 2017
a word used not only to express happieness, but also in conjunction with hand symbols to express size.
-YAY! i won the lottery!

-hes about yay high *hold out hand*

-the box was yay wide by yay high
yay by berserker395 July 23, 2005
Often used as an exclamation for joyous occasions. Also sometimes used as a slang term for "this" when describing an object or person.
Man: Did you see a man go by, about yay tall?
Yay by Happpinesss June 5, 2010