Coat of arms
A modern coat of arms is derived from the mediŠval practice of painting designs onto the shield and outer clothing of knights to enable them to be identified in battle, and later in tournaments. Modern usage may see these designs as carved or painted ornamentation to buildings and furniture, as printed or embossed images on notepaper and other documents and incorporated as part of a seal. The Great Seal of the United States is often described as being the coat of arms of the United States of America. A coat of arms, sometimes known as an achievement or as armorial ensigns or bearings are designed according to the rules of heraldry.