Definitions

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

  • n. Informal One that serves as a substitute for another.
  • n. Informal A short informative summary.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A temporary replacement for another

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

  • n. someone who takes the place of another (as when things get dangerous or difficult)

Etymologies

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Examples

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