poonteen Share definition Flag A young girl, ages 12-15, who dresses like slut and is often mistaken for an older girl. Guy 1: Look at that girl. She's hot.Guy 2: You're sick man. That's poonteen. poonteen by JASAV September 13, 2009 0 0 Get merch Get the poonteen mug. Buy Now — $32.95 See more merch