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

  • n. Games A card in the trump suit, held in reserve for winning a trick.
  • n. A key resource to be used at an opportune moment; a trump: "[They] seem determined to use the agreement as a trump card to obtain ... all the advantages they feel they deserveā€ ( Christian Science Monitor).

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A playing card, of the trump suite that is held in reserve until needed to win a trick
  • n. Something used to obtain an advantage, sometimes unscrupulously

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

  • n. a playing card in the suit that has been declared trumps


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