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1.
Spanish term to describe that something is cool.
These trousers are really 'guay'.
by Spanish September 01, 2004
 
2.
in spanish a disrespectful way of saying "dude". usually used between men as both a friendly and unfriendly term.
"who the fuck does this Guay think he is?"

"callate guay!"

"este guay?"

"horale guay!"

"que onda guay?"
by FunnyBoy182 January 25, 2009
 
3.
Gay Guy, such as Cyril.
Cyril is a Guay.
by Steaver370 May 05, 2004