a girl thats gone out with most guys in your crew, she isn't really a slut because she has long term relationships with these guys. but she's still premiscuous in a sense. think of playing hot potatoe with a group of your friends and she's he potatoe.
X: I heard you broke up with "O", she seeing anyone?
Y: Yeah man we did, I heard she's going out with "Z"!
X: What "Z" our boy "Z", man that chick is such a taiter!