yay

An expression of happiness.

Yay! I have finally finished my work!

Misspelling of yea.

Alternative spelling of yea.

The tree was yay big.

See, in the 1800s, the island was yay big, but by the 1990s, it was yay big.

Cocaine (powder or crack).

In Billy Corben's engrossing new documentary, Cocaine Cowboys (Magnolia Pictures), self-described "assassin" Jorge "Rivi" Ayala (among others) give up the goods on Miami's explosive early '80s yay trade.

I'm in charge of a whole city block, and I always wear gloves when I touch the yay, cuz traces of cocaine show up on my u. a., when I touch it with my bare hands.