We found 34 dictionaries that define the word cast iron:

General (22 matching dictionaries)

1. cast-iron, cast iron: Merriam-Webster
2. cast iron: Oxford Learner's Dictionaries
3. cast-iron, cast iron: American Heritage Dictionary of the English Language
4. cast-iron, cast-iron, cast iron: Collins English Dictionary
5. cast-iron, cast iron: Vocabulary.com
6. Cast-Iron, Cast-iron, cast-iron, cast iron: Wordnik
7. cast-iron, cast iron: Cambridge Advanced Learner's Dictionary
8. cast-iron, cast iron: Wiktionary
9. cast-iron, cast iron: The Wordsmyth English Dictionary-Thesaurus
10. cast iron: Infoplease Dictionary
11. Cast-iron, Cast iron, cast-iron, cast iron: Dictionary.com
12. Cast Iron, Cast-iron, Cast iron: Wikipedia, the Free Encyclopedia
13. Cast-iron, Cast iron: Online Plain Text English Dictionary
14. cast-iron: Webster's Revised Unabridged, 1913 Edition
15. cast-iron, cast iron: Rhymezone
16. Cast-iron, Cast iron: AllWords.com Multi-Lingual Dictionary
17. cast-iron, cast iron: FreeDictionary.org
18. cast-iron, cast iron: Mnemonic Dictionary
19. cast-iron, cast iron: TheFreeDictionary.com
20. cast iron: Longman Dictionary of Contemporary English

Business (3 matching dictionaries)

21. Construction Term Glossary (No longer online)
22. cast iron: Legal dictionary
23. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

24. cast-iron, cast iron: Encyclopedia

Medicine (1 matching dictionary)

25. cast iron: Medical dictionary

Miscellaneous (1 matching dictionary)

26. cast-iron, cast iron: Idioms

Slang (1 matching dictionary)

27. Cast Iron (offensive): Racial Slur Database

Tech (5 matching dictionaries)

28. AUTOMOTIVE TERMS (No longer online)
29. Illustrated Glass Dictionary (No longer online)
30. Bridge Dictionary (No longer online)
31. Bridge and Tunnels Terminology (No longer online)
32. Urban Conservation Glossary (No longer online)

(Note: See cast_irons as well.)

Definitions from Wiktionary (cast iron) ▸ noun:  A hard and brittle, but strong, alloy of iron, carbon, and silicon, formed by casting in a mould. ▸ adjective:  (not comparable) Made of cast iron. ▸ adjective:  Durable; tough; resilient. ▸ adjective:  Inflexible or without exception. Similar: iron, robust, castiron, cast-iron, cast steel, Berlin iron, white iron, ductile iron, gray iron, iron cement, more... Types: pig iron, wrought iron, gray iron, white iron, malleable iron, ductile iron, more... Phrases: cast iron plant, alloy cast iron, malleable cast iron, nodular cast iron, white cast iron, more... Adjectives: iron, castiron, cast-iron, forged, irony, open-hearth, steel, roky, baller, tilting ▸ Words similar to cast iron ▸ Usage examples for cast iron ▸ Idioms related to cast iron ▸ Wikipedia articles (New!) ▸ Popular nouns described by cast iron ▸ Words that often appear near cast iron ▸ Rhymes of cast iron ▸ Invented words related to cast iron