Labrador UK /ˈlæb.ɹəˌdɔː(ɹ)/US /ˈlæb.ɹəˌdɔɹ/ noun4 •A geographic region, the mainland portion of the province of Newfoundland and Labrador, in eastern Canada. •Ellipsis of Labrador retriever. •(historical) A geographic region, including the mainland portion of Newfoundland and Labrador and neighbouring regions of what is now the province of Quebec. •The Labrador Sea: An arm of the North Atlantic Ocean between Greenland and Labrador. formsLabradors