Definition of spiegeleisen
: a composition of iron that contains 15 to 30 percent manganese and 4.5 to 6.5 percent carbon
Origin and Etymology of spiegeleisen
German Spiegeleisen, from Spiegel mirror + Eisen iron
First Known Use: 1855
Seen and Heard
What made you want to look up spiegeleisen? Please tell us where you read or heard it (including the quote, if possible).