What is Shipping Container?

Legal Definition
A shipping container is a container with strength suitable to withstand shipment, storage, and handling. Shipping containers range from large reusable steel boxes used for intermodal shipments to the ubiquitous corrugated boxes. In the context of international shipping trade, "container" or "shipping container" is virtually synonymous with "(standard) intermodal freight container" (a container designed to be moved from one mode of transport to another without unloading and reloading).
-- Wikipedia
Legal Definition
A standard sized container that is resealable and lockable that is used with standard equipment for handling freight. 2 stabdard sizes in 20 foot and 40 foot.