backstop

definition: a precaution in case of an emergency
example: They acted as a backstop in case anything went wrong.
speech part: noun
synonyms:
definition: (baseball) a fence or screen (as behind home plate) to prevent the ball from traveling out of the playing field
example:
speech part: noun
synonyms:
definition: (baseball) the person who plays the position of catcher
example:
speech part: noun
synonyms: catcher
definition: to act as a backstop
example: The backstops the situation, should thinks get out of hand.
speech part: verb
synonyms:

How backstop is being used?