- A river (the Niagara River) which flows from Lake Erie, over Niagara Falls into Lake Ontario; the geographical region of the United States and Canada in proximity to this river.
- A ghost town in British Columbia, Canada.
- A ghost town in Western Australia.
- A town in New York state.
- A city/village in North Dakota.
- A city and town in Wisconsin.
Niagara (plural Niagaras)
- (figuratively) A flood, torrent, or outpouring, especially one of massive proportions.
- A Niagara grape.
1950, Peter John Valaer, Wines of the world:
- The basic material for sherry is a mixture or a blend of dry wines from Niagaras, Delawares, and Catawbas or other white juices, which are sweetened and fortified and then blended with California sherry.
2004, Dan Lynch, Hustlers, heroes and hooligans: reporting on the New York experience:
- During the past 25 years, New York wineries have moved away from Niagaras and Delawares and begun producing world-class wines from European grapes and specially cultured hybrids and varietals.
- ^ 1978, William C. Sturtevant (Smithsonian Institution), Handbook of North American Indians, volume 13, part 1, page 411