Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Something to which one can resort or retreat.
  • n. A retreat.
  • n. Computer Science A mechanism for carrying forth programmed instructions despite malfunction or failure of the primary device.
  • n. Something that falls back: the fallback of a huge explosion.
  • adj. Of, relating to, or constituting a resort or place of retreat: a fallback proposal; a fallback position behind our own lines.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An act of falling back.
  • n. A backup plan or contingency strategy; an alternative which can be used if something goes wrong with the main plan; a recourse.
  • n. A reduction in bitumen softening point, sometimes called refluxing or overheating in a relatively closed container.
  • adj. That can be resorted to as a fallback.

from the GNU version of the Collaborative International Dictionary of English

  • n. The act or process of falling back.
  • n. Something or someone to which one resorts as an alternative to a failed resource or method.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. to break off a military action with an enemy
  • v. retreat
  • v. fall backwards and down
  • v. move back and away from
  • v. have recourse to
  • v. go back to bad behavior
  • v. hang (back) or fall (behind) in movement, progress, development, etc.

Etymologies

From the verb fall back. (Wiktionary)

Examples

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