1. An opening into which a plug or other connecting part is designed to fit (e.g. a light bulb socket).
  2. A hollow into a bone which a part fits, such as an eye, or another bone, in the case of a joint.
  3. A two-way named pipe on Unix and Unix-like systems, used for interprocess communication.


  1. To place or fit in a socket.

The above text is a snippet from Wiktionary: socket
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