Butt nose Share definition Flag A nose that is in fact shaped like a butt or ass crack. 1) Have you seen that new flick with Luke Wilson? 2) It's hard to get in to it when all you see is that butt nose of his. Butt nose by bigdawg7680 April 23, 2009 0 0 Get merch Get the Butt nose mug. Buy Now — $32.95 See more merch