ironstone

Etymology
From.

Noun

 * 1) Any ore of iron which is impure through the admixture of silica or clay.
 * 2) A type of vitreous pottery similar to stoneware
 * 1) A type of vitreous pottery similar to stoneware
 * 1) A type of vitreous pottery similar to stoneware
 * 1) A type of vitreous pottery similar to stoneware
 * 1) A type of vitreous pottery similar to stoneware

Translations

 * Bulgarian: желязна руда
 * Esperanto: ferŝtono
 * Irish: iarnchloch