Dun is a term that can refer to a hill or a fort, particularly in Scotland and Ireland. It often describes a fortified settlement or a stronghold built on elevated ground, providing a strategic advantage. Many historical sites named Dun are remnants of ancient civilizations and are significant in understanding early human settlements. In addition to its geographical meaning, "Dun" can also refer to a color, specifically a dull grayish-brown shade. This color is often associated with certain animals, such as horses, which may have a coat that appears dun. The term is used in various contexts, including art and design, to describe this muted hue.