Ontario - a prosperous and industrialized province in central CanadaCanada - a nation in northern North America; the French were the first Europeans to settle in mainland Canada; "the border between the United States and Canada is the longest unguarded border in the world" Hamilton - a port city in southeastern Ontario at the western end of Lake Ontario Kingston - a town in southeast Ontario on Lake Ontario near the head of the Saint Lawrence River Sudbury - a city in south central Canada in Ontario; a major nickel mining center Toronto - the provincial capital and largest city in Ontario (and the largest city in Canada) James Bay - the southern extension of Hudson Bay in Canada between western Quebec and northeastern Ontario Niagara, Niagara Falls - waterfall in Canada is the Horseshoe Falls; in the United States it is the American Falls |