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nightcap definition

night·cap (nīt′kap′)

noun

  1. a cap worn to bed, esp. formerly, to protect the head from cold
  2. Informal an alcoholic drink taken just before going to bed or at the end of an evening of partying, a night on the town, etc.
  3. ☆ Baseball, Informal the second game of a double-header

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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