sloo Share definition Flag A girl who isn't quite a slut, but gets around just enough to have the reputation of being easy. Chris: She met you at a party where she knew 50 football players would be blackout drunk? Sounds like a slut. Max: Nah, man. She's just a sloo. sloo by Chris_01 September 15, 2007 0 0 Get merch Get the sloo mug. Buy Now — $32.95 See more merch