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The eastern Canadian provinces of New Brunswick, Prince Edward Island, Nova Scotia, and Newfoundland and Labrador.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Placename) the Atlantic Provinces certain of the Canadian provinces with coasts facing the Gulf of St Lawrence or the Atlantic: New Brunswick, Nova Scotia, Prince Edward Island, and Newfoundland and Labrador
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
the Canadian provinces bordering the Atlantic Ocean, comprising New Brunswick, Newfoundland, Nova Scotia, and Prince Edward Island.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.