backstop

noun
1
a fence or screen used to stop balls from going outside the playing area
توری حفاظ توپ, مانع توپ, شبکه ضربه‌گیر, تور حفاظتی
2
the player who stands behind the person who is batting and catches the ball if that person does not hit it
گیرنده توپ
compare catcher(1)
3
something that is done or prepared in advance in order to prevent worse problems if something goes wrong
چاره جایگزین, پلان دوم, اقدام احتیاطی, تدبیر پیشگیرانه
The country needs a financial backstop to deal with bank failures.