铁矾土 tiěfántǔ ferruginous bauxite Origin Definitions Defs Strokes Stroke Words Sentences Sents 铁 鐵 tiě noun iron iron (Fe); the metal used for making steel and tools矾土 礬土 fántǔ alumina alumina; a raw aluminum mineral typically occurring as a white powder used as the primary material for smelting aluminum and as a filler for ceramics or paints