Skirt steak
In the United States, the North American Meat Processors Association (NAMP) indentifies all skirts steaks NAMP 121. NAMP 121 is further subdivided into the outer (outside) skirt steak (NAMP 121C) and the inner (inside) skirt steak (NAMP 121D). The beef flank steak (NAMP 193) is next to the skirt, nearer the animal's rear quarter.