a hard, white pig iron containing 15 to 32% manganese
also spie′gel or spiegel iron
Origin of spiegeleisenGerman ; from spiegel, mirror (; from Old High German spiagal ; from Classical Latin speculum: see speculum) + eisen, iron
An alloy of iron containing approximately 15 percent manganese and small quantities of carbon and silicon, used in the Bessemer process.
Origin of spiegeleisenGerman : Spiegel, mirror (from Middle High German, from Old High German spiagal, from Latin speculum; see speculum) + Eisen, iron (from Middle High German &imacron;sen, from Old High German &imacron;san; see eis- in Indo-European roots).
German, literally "mirror-iron".