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Meaning of louis d'or

lou•is d'or

Pronunciation: (l"ē dôr' Fr. lwē dôr'), [key]
— pl. lou•is d'or
  1. a former gold coin of France, issued from 1640 to 1795; pistole. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.