1. a uniform, sealed, reusable metal "box" in which merchandise is shipped by vessel, truck, or rail. Standard lengths include 10, 20, 30, and 40 feet (40 foot lengths are generally able to hold about 40,000 pounds). Containers of 45 and 48 feet are also used, as well as containers for shipment by air.
2. a standardized metal storage unit that can be transported via train, truck, airplane or freighter ship. Large containers have shortened the time and labor required to load and unload many smaller items of merchandise.