Definitions
1.nounSomeone who contains; something that contains.
2.nounAn item in which objects, materials or data can be stored or transported.
3.nounA very large, typically metal, box used for transporting goods.
4.noun(by extension) Someone who holds people in their seats or in a (reasonably) calm state.
5.nounA file format that can hold various types of data.
6.nounAn abstract data type whose instances are collections of other objects.
7.nounAny user interface component that can hold further (child) components.