WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. pig iron containing manganese; used as a deoxidizing agent and to raise the manganese content in making steel
Word Usage
"Cast iron, which contains the metal manganese up to the extent of 20\%, together with about 3\% carbon, is called spiegel iron; when more than this amount of manganese is present the product is called ferromanganese."