Corned Beef Gash Share definition Flag A very mean-spirited term used to describe a particularly unattractive vagina. "I can't believe your mom did that porno! Who the hell wants to see her corned beef gash?" Corned Beef Gash by foolkilla August 15, 2012 0 0 Get merch Get the Corned Beef Gash mug. Buy Now — $32.95 See more merch