Niagara river in Autumn.
Niagara definition by Webster's New World
a torrent, or flood
Origin: after the falls
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
river between W N.Y. & SE Ontario, Canada, flowing from Lake Erie into Lake Ontario: c. 36 mi (58 km)
Origin: ; from French ; from Iroquoian town name
Niagara definition by American Heritage Dictionary
A torrent or flood: “engulfed by the Niagara of Americanisms that flowed over them” (Wall Street Journal).
Origin: After Niagara (Falls)1.