n. [ G. ] A loose, earthy deposit from water, found in the cavities or clefts of rocks, mostly white, but sometimes red or yellow, from a mixture of clay or ocher. P. Cleaveland. [ 1913 Webster ]
‖n. [ G., fr. kiesel flint + guhr an earthy deposit or sediment in water. ] Siliceous earth; diatomaceous earth; specifically, porous infusorial earth, used as an absorbent of nitroglycerin in the manufacture of dynamite. [ 1913 Webster ]