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wrong number definition

wrong number

    1. a telephone number reached through error, as by dialing incorrectly
    2. the person reached by so dialing
  2. Slang someone or something considered to be unsuitable, undesirable, untrustworthy, etc.

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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