American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "pig iron" in a sentence
"Page 26 1600 tons of pig iron annually; Ballendine's 1000; Callaway's, Millar's, and Zane's, about 600 each."
"It's old steel, made from pig iron in a Bessemer furnace."