Newfoundland UK /ˈnjuːˌfaʊnd.lənd/US /ˈn(j)u.fənd.lənd/ noun3 •A large island off the coast of eastern Canada, which, along with Labrador, has composed the Canadian province of Newfoundland and Labrador since 1949, and the Dominion of Newfoundland, before it. •(historical) A former North American colony of the British Empire; in full, Colony of Newfoundland. •A very large breed of working dog from Newfoundland, with a shaggy, usually black coat, known for its water rescue ability, strength, and gentle disposition.The younger, a frank, bold, bright-eyed child, was mounted on a large Newfoundland dog, whose impatience the elder brother was trying to soothe. — 1831 formsNewfoundlands