containercon·tain·er /kənˈteɪnə-ər/ noun [countableC] 1something such as a box or bottle that can be used for keeping things in
the EU directive on beverage containers
2TRANSPORTa very large metal box, of a standard size, in which goods are packed to make it easy to lift or move them onto a ship or road vehicle
The deck was full of cargo containers.
a container ship (=one designed to carry containers)