Definition of "niter" []

• A white, gray, or colorless mineral of potassium nitrate, KNO3, used in making gunpowder. Also called saltpeter. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "There's a stuff called sweet spirits of niter, which is, I think, used in kidney ailments."
• "Meanwhile, Lincoln conducted the bloodiest war in U.S. history to preserve the Union, authorized the deployment of deadly new weaponry such as mines, ironclad warships and niter a 19th-century version of napalm, and accepted huge casualties for his chosen cause."
• "I returned the wig because because of the TMI exposition slam Gawker ran about a one-niter O'Donnell had two years ago."