T'ARTAR, noun 1. An acid concrete salt, formed from wines completely fermented, and adhering to the sides of the casks in the form of a hard crust. It is white or red, the white being most esteemed. In its crude state, it is much used as a flux in the assaying of ores. Tartar is a supertartrate of potash; that is, a compound of tartaric acid and potash, having the acid in excess. 2. A person of a keen irritable temper. 3. A native of Tartary; a corruption of Tatar. T'ARTAR, noun [Latin Tartarus.] Hell. [Not in use.]
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI