We found 28 dictionaries that define the word pig iron:

General (20 matching dictionaries)

1. pig iron: Longman Dictionary of Contemporary English
2. pig iron: Merriam-Webster
3. pig iron: Oxford Learner's Dictionaries
4. pig iron: American Heritage Dictionary of the English Language
5. pig iron: Collins English Dictionary
6. pig iron: Vocabulary.com
7. pig-iron, pig iron: Wordnik
8. pig iron: Cambridge Advanced Learner's Dictionary
9. pig iron: Wiktionary
10. pig iron: The Wordsmyth English Dictionary-Thesaurus
11. pig iron: Infoplease Dictionary
12. Pig iron, pig iron: Dictionary.com
13. Pig-iron, Pig iron (disambiguation), Pig iron: Wikipedia, the Free Encyclopedia
14. pig iron: Rhymezone
15. Pig-iron: Dictionary of Phrase and Fable (1898)
16. pig iron: FreeDictionary.org
17. pig iron: Mnemonic Dictionary
18. pig iron: TheFreeDictionary.com

Business (2 matching dictionaries)

19. pig iron: Legal dictionary
20. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

21. pig iron: Encyclopedia

Medicine (1 matching dictionary)

22. pig iron: Medical dictionary

Slang (1 matching dictionary)

23. Pig-iron: Urban Dictionary

Tech (3 matching dictionaries)

24. Metal Terminology (No longer online)
25. AUTOMOTIVE TERMS (No longer online)
26. PIG IRON: Power Engineering

(Note: See pig_irons as well.)

Definitions from Wiktionary (pig iron) ▸ noun:  A type of crude, brittle iron shaped like a block, unsuitable for working but suitable for casting, commonly used as an industrial raw material. Similar: Berlin iron, ductile iron, white iron, cast iron, gamma iron, iron, charcoal iron, tank iron, iron flint, castiron, more... Opposite: wrought iron, steel, cast iron Types: wrought iron, boilerplate, more... Phrases: Nickel pig iron, more... Adjectives: open-hearth, cast iron, iron, blooming, roky, cast-iron, irony, castiron, steel, forged, tilting ▸ Words similar to pig iron ▸ Usage examples for pig iron ▸ Idioms related to pig iron ▸ Wikipedia articles (New!) ▸ Words that often appear near pig iron ▸ Rhymes of pig iron ▸ Invented words related to pig iron