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1.
Short form of "Prostitute".
Damn, it's like -10C outside! That's one frosty Prosty on the corner there!
by kowrek February 02, 2005
 
2.
the short form for prostitute
look at all these prosties(pl.), just invading!
by Ashlee LT August 01, 2005
 
3.
Short for prostitute

prostitute
That bitch is a prosty!
Man, this place is littered with prosties
by Massacre Mel September 06, 2008