The term 'Horse Shelter' can be summarized as a STABLE, which is a six-letter word. A STABLE is a building or structure that provides shelter and protection for horses. It is typically made of wood or metal and is designed to keep the horses safe from the elements. Stables are often equipped with stalls, feeders, and other amenities to provide a comfortable environment for the horses. Stables are also used to store hay, grain, and other supplies necessary for the care of horses.