- 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