The term 'BONY STRUCTURE OF THE FOOT' can be broken down into two parts: the ARCH (4 letters) and the ribcage (7 letters). The ARCH is a curved structure that runs along the bottom of the foot, connecting the heel to the toes. It provides support and stability for the foot when walking or running. The ribcage is a series of bones that form a protective cage around the chest and upper abdomen. It is made up of 12 pairs of ribs, the sternum, and the vertebrae. Together, these two structures provide support and protection for the body's vital organs.