atomic number 26, Fe, iron - a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood

basic iron - pig iron containing a high percentage of phosphorus; used in making steel by a process that removes the phosphorus

cast iron - an alloy of iron containing so much carbon that it is brittle and so cannot be wrought but must be shaped by casting

wrought iron - iron having a low carbon content that is tough and malleable and so can be forged and welded

cinder pig - pig iron containing a substantial proportion of slag

mine pig - pig iron made entirely from ore

spiegel, spiegel iron, spiegeleisen - pig iron containing manganese; used as a deoxidizing agent and to raise the manganese content in making steel