1. 
   Yay
   [n] - a branch of the Tai languages
   Found op http://www.webdictionary.co.uk/definition.php?query=Yay
   
   
2. 
   Yay
   noun a branch of the Tai languages
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=Yay
   
   
3. 
   Yay
   Zayd imm of Yemen from 1904 to 1948.[3 related articles]
   Found op http://www.britannica.com/eb/a-z/y/1
   
   
4. 
   Yay
   Yet Another Yacc
   Found op http://foldoc.org/Yay
   
   
5. 
   yay
   1) 'hooray!' 2) 'hurrah!' 3) 'huzzah!' 4) 'i'm so glad!' 5) 'way to go!' 6) 'what great news!' 7) 'whoopee!' 8) 'woo-hoo!' 9) 'yippee!' 10) A branch of the tai languages 11) Celebratory cry 12) Cheerleader's shout
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/yay/1
   
   

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