Emily Dickinson Lexicon

SAN'DE-VER, or SAN'DI-VER, n. [Fr. sain de verre, or saint de verre, dross or recrement of glass.]

Glass-gall; a whitish salt which is cast up from the materials of glass in fusion, and floating on the top, is skimmed off. A similar substance is thrown out in eruptions of volcanoes. It is used by gilders of iron, and in the fusion of certain ores. It is said to be good for cleansing the skin, and taken internally, is detergent. – Encyc.