Lake ontario

What is Lake ontario?

Lake ontario definition and meaning on Dictionary terms:
noun

a province in S Canada, bordering on the Great Lakes. 412,582 sq. mi. (1,068,585 sq. km). Capital: Toronto.
Lake, a lake between the NE United States and S Canada, between New York and Ontario province: the smallest of the Great Lakes. 193 miles (310 km) long; 7540 sq. mi. (19,530 sq. km).
a city in SW California, E of Los Angeles.