A coat of arms is a unique heraldic symbol that represents an individual, family, organization, or state. It typically features a shield, supporters, and a motto, and is used to convey identity and heritage. Each element in a coat of arms has specific meanings, often reflecting the values, history, or achievements of the bearer. Coats of arms originated in the Middle Ages, primarily for knights to identify themselves in battle. Over time, they evolved into symbols of nobility and were adopted by various institutions, including countries, cities, and universities, to signify their distinct identities and traditions.