container

noun10

1. •
   Someone who contains; something that contains.
2. •
   An item in which objects, materials or data can be stored or transported.
3. •
   A very large, typically metal, box used for transporting goods.
4. •
   A file format that can hold various types of data.

   • As the MP4 container can store audio, video, or both, the M4A naming and file extension is used to hint that this MP4 container holds solely audio information. — 2011
5. •
   An abstract data type whose instances are collections of other objects.

   • This advantage is the primary incentive for using a list container, rather than a vector or a deque. — 2015
6. •
   Any user interface component that can hold further (child) components.

   • Flex automatically creates a TabBar container at the top of the TabNavigator container, with a tab corresponding to each child container. Each tab can have its own label and icon. — 2007
7. •
   A bundle consisting of operating system, application code and dependencies to be run sandboxed inside a virtualized environment; (by extension) the environment itself.

   • Generally, when people think of serverless computing, they tend to think of applications with back-ends that run on third-party services, also described as code running on ephemeral containers. — 2017
8. •
   A web container.
9. •
   A type of cryptic device where one word is inserted into another.

   • As with all varieties of cryptic clues, the container device can be used in conjunction with other devices, especially in more complex cryptic crosswords. — 2012
10. •
    Someone who holds people in their seats or in a (reasonably) calm state.