double fault

/D AH1 B AH0 L F AO0 L T/
noun
  1. 1

    The missing of both the first serve and second serve, resulting in a point for the receiver.

  2. 2

    An exception thrown by the CPU while trying to call the handler of another exception (e.g. the exception handler is invalid or the call stack has overflowed).

Source: https://en.wiktionary.org/wiki/double%20fault