Webster’s Revised Unabridged Dictionary · 1913
Limonite
Li′mon·ite (lī′mŏn·īt), n. [Gr. λειμών any moist grassy place, a meadow : cf. F. limonite, G. limonit.] (Min.) Hydrous sesquioxide of iron, an important ore of iron, occurring in stalactitic, mammillary, or earthy forms, of a dark brown color, and yellowish brown powder. It includes bog iron. Also called brown hematite.