fallbacks

Noun

fallback (countable and uncountable, plural fallbacks)

1. An act of falling back.
   • A failure of one of the rocket's first-stage engines just after liftoff would result in a destructive pad fallback.

   Synonyms:

   ebbing, recession, retreat

2. A backup plan or contingency strategy; an alternative which can be used if something goes wrong with the main plan; a recourse.
   • As a fallback, I suppose we can use typewriters if the word processing system fails.

   Synonyms:

   back-up, backup

3. A reduction in bitumen softening point, sometimes called refluxing or overheating, in a relatively closed container.
4. Pulverised material that falls back to earth after a nuclear explosion; fallout.
   • Particle size distributions of fallback and ejecta were determined principally by mechanical sieving and weighing.1970, Nuclear Science Abstracts, page 3595

See all 5 meanings of fallback