plin Share definition Flag A word made up by a 11 year old girl that means go screw a tree. You: Hey, wanna go shopping? Me: Plin. I hate shopping. You: WTF?!?! Me: I SAID PLIN! plin by your_mommas_butt July 11, 2007 0 0 Get merch Get the plin mug. Buy Now — $32.95 See more merch