callback

/K AO1 L B AE0 K/
noun
  1. 1

    The return of a situation to a previous position or state.

  2. 2

    A return telephone or radio call; especially one made automatically to authenticate a logon to a computer network.

  3. 3

    A product recall because of a defect or safety concern.

  4. 4

    A function pointer passed as an argument to another function.

  5. 5

    A follow-up audition (casting)

  6. 6

    A joke which references an earlier joke in the same routine

Synonyms

Source: https://en.wiktionary.org/wiki/callback