Ink'-stōne, n.
n. A kind of small, round stone, of a white, red, gray, yellow, or black color, containing a quantity of native vitriol or sulphate of iron, used in making ink.
n. A kind of small, round stone, of a white, red, gray, yellow, or black color, containing a quantity of native vitriol or sulphate of iron, used in making ink.