the GNU version of the Collaborative International Dictionary of English
n. Crude tartar; an acidulous salt from which cream of tartar is prepared. It exists in the juice of grapes, and is deposited from wines on the sides of the casks.
The Century Dictionary and Cyclopedia
n. Unrefined or crude tartar; a hard crust, consisting of potassium bitartrate, formed on the sides of vessels in which wine has been fermented.
n. A cake of dried camel's dung, used by the Mongols as fuel.
Word Usage
"Steep in a fresh liquor of Barilla ash or soda plus sheep's dung, olive oil and white argol."