Dictionary.com
Thesaurus.com

Hundred Years' War

American  

noun

  1. the series of wars between England and France, 1337–1453, in which England lost all its possessions in France except Calais.


Hundred Years' War British  

noun

  1. the series of wars fought intermittently between England and France from 1337–1453: after early victories the English were expelled from all of France except Calais

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Hundred Years' War Cultural  
  1. A war between France and England that lasted from the middle of the fourteenth century to the middle of the fifteenth. The kings of England invaded France, trying to claim the throne. Toward the end of the war, Joan of Arc helped rally the French, who finally drove out the English.