sockets

/S AA1 K AH0 T S/
noun
  1. 1

    An opening into which a plug or other connecting part is designed to fit (e.g. a light bulb socket).

    syn:jack
  2. 2

    A hollow into a bone which a part fits, such as an eye, or another bone, in the case of a joint.

  3. 3

    One endpoint of a two-way communication link, used for interprocess communication across a network.

  4. 4

    One endpoint of a two-way named pipe on Unix and Unix-like systems, used for interprocess communication.

  5. 5

    A hollow tool for grasping and lifting tools dropped in a well-boring.

  6. 6

    The hollow of a candlestick.

  7. 7

    A steel apparatus attached to a saddle to protect the thighs and legs.

Synonyms

Source: https://en.wiktionary.org/wiki/socket, https://en.wiktionary.org/wiki/sockets