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Atlantic Provinces

plural noun
  1. the Canadian provinces bordering the Atlantic Ocean, comprising New Brunswick, Newfoundland, Nova Scotia, and Prince Edward Island.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for atlantic provinces

Atlantic Provinces

pl n
  1. 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 & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012