| Definitions | | pig iron |
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noun - A type of crude iron shaped like a block. Pig iron is commonly used as a raw material in industry.
Etymology: In the 1800s, there was an old method of placing small blocks of crude iron into molds in sand beds fed from a common runner. The blocks of iron were called the suckling "piglets", and the runner was called the "pig." Since then, "pig iron" has become a widely used term.
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