Definition of Niagara Falls
1 waterfalls on border between New York & Ontario in the Niagara River (36 miles or 58 kilometers flowing from Lake Erie N into Lake Ontario); divided by Goat Island into Horseshoe, or Canadian, Falls (158 feet or 48 m high) & American Falls (167 feet or 51 m high)
2 city W New York at the falls pop 50,193
3 city Canada in SE Ontario pop 82,997
Learn More about niagara falls
Britannica.com: Encyclopedia article about Niagara Falls
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