Top definition
Used as an exclamation of pleasure, approval, elation, or victory.
by IAMSODOT March 11, 2004
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2
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
by serialman August 31, 2012
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3
a slang term for Cartier glasses often used Detroit, MI
I just bought some yays.
by mookmack September 15, 2006
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4
A unit of length commonly applied in the study of caldera volcanoes. Approximated by 1/2 an arm span of a tall university professor.
The pyroclastic fall deposit here is about yay thick *holds arms out to show size*.
by Aegerine October 10, 2014
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5
1. An expression of joy usually accompanied by raising both arms in the air; the higher, the more joyful.
Can also be used sarcastically.
by Elaine October 17, 2001
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6
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
by Bookworm February 02, 2005
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7
1. When something is spectacularly fantastic!

2. Sarcasm when something overly unbelievable happens.
1. I'm going on vacation and I'm going to get tan! yay!!

2. I forgot my card in the ATM machine. yay!!
by yvonne March 12, 2003
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