short for aston. usually use in messenger or sms to save up time and characters.
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