a river in NE North America, on the border between W New York State and Ontario, Canada, flowing from Lake Erie to Lake Ontario. Length: 45 km (28 miles)
2.
a torrent
Niagara in American English1
(naɪˈægrə; naɪˈægərə)
noun
a torrent, or flood
Word origin
after the falls
Niagara in American English2
(naɪˈægrə; naɪˈægərə)
river between W N.Y. & SE Ontario, Canada, flowing from Lake Erie into Lake Ontario: c. 36 mi (58 km)