Wiktionary
n. (context US slang English) A (l en prostitute).
Usage examples of "prosty".
Brain circuits: prostie Bobby Inge, Kostenza bailed him on a prostie beef, prosties used phony names, prosties posed for stag pix.
The undercover guys were having trouble making arrests because the prosties were being tipped off.
They need something for their activity sheets, they can always bust one of the prosties working the trucks out of the Meat Market.
Don Jordan passed his other prosties Mickey Mouse--size Minox minicameras.
Minear went on a sex bender then, a different Felix Gordean male prostitute every night--Reynolds lived in terror of his ex-lover telling them of the incest and tricked with a bunch of prosties himself, for the sex and to keep his ear down.
Pete got her rap sheet: Four prosty beefs/one hot-check caper/one dope bounce.