short for aston. usually use in messenger or sms to save up time and characters.
thom:yo ast sup lately
ast:fuck you
by thom January 03, 2004
Sorority girls who pretty much get around.. they know how to spread it..
You can't spell nasty without a AST!
by sorority girl December 18, 2007
You cant spell nASTy without AST
Damn that girl is nasty, she must be an AST.
by Rockstar!! August 28, 2009

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