Definition of "fall-back" [fall-back]

• A variant form of fallback. (noun)

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• "The White House and Republicans are scrambling to reach a deficit-reduction deal soon so they don't have to use the McConnell plan, which members in both parties have described as a fall-back option that would only be used to avoid default."
• "The fall-back is to hold up the Post Office as another example of inefficiency."
• "Allardyce hopes Santa Cruz will stay but lines up Diouf as a fall-back"