Meat nappy Share definition Flag An absorbant cloth placed on the underisde of steaks and other moist red meat products. "make sure you take that meat nappy off the steak billy, it's covered in cow jam" Meat nappy by Gaping Malefant May 9, 2009 0 0 Get merch Get the Meat nappy mug. Buy Now — $32.95 See more merch