baseball : a fence or screen that is placed behind the catcher to prevent the ball from rolling away
: something that is kept so that it can be used if it is needed
What made you want to look up backstop? Please tell us where you read or heard it (including the quote, if possible).
Take Our 10-Question Quiz
The commonly misspelled words quiz
How strong is your vocabulary?
The Vocab Quiz Game for iPhone & iPad
"Incredibly fun and addictive. And informative!" User Review, iTunes