Box (plural boxes) describes a variety of containers and receptacles for permanent use as storage, or for temporary use often for transporting contents.Boxes may be made of durable materials such as wood or metal, or of corrugated fiberboard, paperboard, or other non-durable materials. The size may vary from very small (e.g., a matchbox) to the size of a large appliance. A corrugated box is a very common shipping container.