1. A word used by jealous females to describe a better looking "mate" when she gets more boy attention than them.
2. A word used by hurt boys to describe either the girl that just dumped them or a girl, who they fancy, that wont go out with them.
"(name) is such a slut, she has been out with loads of lads".
"My ex is a slut, she has moved on already and we only finished 2 days ago".