Top Definition
Both a term and symbol to represent every class of '09. Derived from 09+dynasty => nine-asty => Nynasty.

Hand gesture is the same as Jay-Z's, "The Roc", which is in the shape of a diamond.
"Throw up the nynasty!"

"Go '09!!! Nynasty!!!"
by Nyny May 06, 2008
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