Definition of fallbacks:
(n) :
A backup plan or contingency strategy; an alternative which can be used if something goes wrong with the main plan; a recourse.
(n) :
An act of falling back.
(adj) :
That can be resorted to as a fallback.
(n) :
Pulverised material that falls back to earth after a nuclear explosion; fallout.
(n) :
(construction) A reduction in bitumen softening point, sometimes called refluxing or overheating, in a relatively closed container.
(v) :
Misspelling of fall back. [Used other than figuratively or idiomatically: see fall, back.]