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WORDNET DICTIONARY
Noun niagara falls has 2 senses
- niagara falls(n = noun.object) niagara - waterfall in Canada is the Horseshoe Falls; in the United States it is the American Falls; is a part of ontario, empire state, new york, new york state, ny, niagara, niagara river
- niagara falls(n = noun.location) - a city in western New York State at the falls of the Niagara river; tourist attraction and honeymoon resort; is a kind of city, metropolis, urban center
has parts: american falls, canadian falls, horseshoe falls
is a kind of falls, waterfall
is a part of empire state, new york, new york state, ny
CIDE DICTIONARY
niagara falls, prop. n.
A large waterfall on the Niagara River near Buffalo remarkable for the volume and constancy of the water flowing over it. That part of the waterfall in Canada is the Horseshoe Falls; the U. S. portion is called the American Falls. [WordNet 1.5]