fall‧back /ˈfɔːlbæk $ ˈfɒːl-/
noun [countable] something that can be used or done if a supply, method etc fails
Synonym : backup:
It’s wise to have an extra video player as a fallback. Do you have a fallback option? ⇒
fall back on somebody/something at
fall1 [TahlilGaran] Dictionary of Contemporary English ▲