a high plain adjoining the city of Quebec, Canada: battlefield where the English under Wolfe defeated the French under Montcalm in 1759.
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British Dictionary definitions for Plains of Abraham
(functioning as singular) a field in E Canada between Quebec City and the St Lawrence River: site of an important British victory (1759) in the Seven Years' War, which cost the French their possession of Canada
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