Brimstone

n. [O. Eng. brymston, brendston, from A-S. bryne, a burning, fire, brinnan, byrnan, to burn, and stone. See BRAND and BURN.] Sulphur; a hard, brittle substance, of a lemon-yellow color, negatively electric by heat and friction. It is found in the neighborhood of volcanoes, and is an ingredient in a variety of minerals and ores. Dana.