a river on the boundary between W New York and Ontario, Canada, flowing from Lake Erie into Lake Ontario. 34 mi. (55 km) long.

Niagara Falls.

Fort, a fort in W New York, at the mouth of the Niagara River.

( lowercase ) anything taken as resembling Niagara Falls in force and relentlessness; avalanche

a niagara of criticism.

Horticulture .

a variety of white grape, grown for table use.

the vine bearing this fruit.

waterfall in Canada is the Horseshoe Falls; in the United States it is the American Falls

a river flowing from Lake Erie into Lake Ontario; forms boundary between Ontario and New York

noun

alluvion , cataclysm , cataract , deluge , downpour , freshet , inundation , overflow , torrent