n: A promiscuous person, usu. a promiscuous female. See "slut", etc.
More commonly used in the 1950's, this term has fallen into general disuse, but may still be heard in fiction that takes place in that era, or in circles that consider retro-talk cool.
"I wouldn't trust that little roundheels as far as I could throw her."
somebody who doesn't mind about having sex with everybody
-She is a real roundheels.All my friends fucked her last night.