The Royal Stables, also known as MEWS, are a traditional term for a stable block or courtyard where horses were kept by members of the royal family. The term is derived from the French word muer, which means to change or exchange horses. The Royal Stables were used to house the horses of the royal family, and were often located near the palace or castle. They were usually staffed by grooms and other attendants who cared for the horses and provided them with food and water.