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a. Something to which one can resort or retreat: applied to another college as a fallback.
b. A retreat: The colonel ordered a fallback to the woods.
2. Something that falls back: the fallback of debris from the explosion.
1. an act or instance of falling back.
2. something or someone to turn or return to, esp. for help or as an alternative.adj.
3. Also, fall′-back`. of or designating something kept in reserve or as an alternative: a fallback plan.
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|Noun||1.||fallback - to break off a military action with an enemy|
retreat - (military) withdrawal of troops to a more favorable position to escape the enemy's superior forces or after a defeat; "the disorderly retreat of French troops"