\ ˈkast-ˈī(-ə)rn How to pronounce cast-iron (audio) \

Definition of cast-iron

 (Entry 1 of 2)

1 : made of cast iron
2 : resembling cast iron: such as
a : capable of withstanding great strain a cast-iron stomach
b : not admitting change, adaptation, or exception : rigid a cast-iron will
c British : not likely to fail or be broken : airtight "Clever idea, Black, getting yourself seen on a safe station platform … gave you a cast-iron excuse not to leave your hidey-hole in future, didn't it?"— J. K. Rowling

cast iron


Definition of cast iron (Entry 2 of 2)

: a commercial alloy of iron, carbon, and silicon that is cast in a mold and is hard, brittle, nonmalleable, and incapable of being hammer-welded but more easily fusible than steel

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Synonyms & Antonyms for cast-iron

Synonyms: Adjective

Antonyms: Adjective

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Examples of cast-iron in a Sentence

Noun The fence is made of cast iron.
Recent Examples on the Web: Noun Serious talk over his next move has been limited as Mbappé is expected to set a new record fee, but Sport claim he's emerged as a cast iron target for Real Madrid next summer., "Report: Real Madrid Makes Kylian Mbappe Its Top Transfer Target for Next Summer," 7 Sep. 2019 At auction, the early cast iron examples garner top prices. Brenda Yenke,, "Planes, trains capture our enthusiasm: Yenke Peddler antiques," 29 Aug. 2019 A few minutes after the galbi is set down on the table, Michael Kim brings out a cast iron gamasot full of rice. Soleil Ho,, "At Maum in Palo Alto, a tasting menu that celebrates Korean American classics," 8 Aug. 2019 Breaking news: Lodge cast iron cookware is on sale today on Amazon. Shanon Maglente, Good Housekeeping, "Lodge Cookware Is Up to 69% Off on Amazon Right Now," 6 Aug. 2019 Even the cast iron fence, dating back to 1849, has a story to tell. Meghan Overdeep, Southern Living, "This Shockingly Affordable North Carolina Beauty Has Porches for Day and Days," 6 Aug. 2019 To accommodate a large group of guests, the party version of Jollof is also cooked in cast iron pots over firewood, giving it a smokey flavor served at parties with fried plantains and moin moin (steamed bean pudding). Haleluya Hadero, Quartz Africa, "How Jollof rice became West Africa’s iconic dish and a point of banter between Africans," 23 Aug. 2019 Special touches: Outside, cast iron lawn furniture painted vibrant colors gives a nice hippie-at-the-beach vibe. Christina Tkacik,, "Imaginative food and a uniquely Baltimore experience at Gypsy’s Truckstaurant," 1 Aug. 2019 Shop the brand's best deals happening right now below: If the Lodge cookware is beyond your budget, AmazonBasics also slashed the price on its enameled cast iron covered Dutch ovens, from $40 to to $28. Caroline Picard, Good Housekeeping, "Lodge Cast-Iron Cookware Is More Than 50% Off for Amazon Prime Day," 15 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cast-iron.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of cast-iron


1692, in the meaning defined at sense 1


1664, in the meaning defined above

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Statistics for cast-iron

Time Traveler for cast-iron

The first known use of cast-iron was in 1664

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More Definitions for cast-iron


How to pronounce cast iron (audio)

English Language Learners Definition of cast-iron

 (Entry 1 of 2)

: made of cast iron
: very strong or tough
British : not likely to fail or be broken

cast iron


English Language Learners Definition of cast iron (Entry 2 of 2)

: a very hard type of metal that is made into different shapes by being melted and poured into special containers (called casts or molds)

cast iron


Kids Definition of cast iron

: a hard and brittle alloy of iron, carbon, and silicon shaped by being poured into a mold while melted

More from Merriam-Webster on cast-iron

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Rhyming Dictionary: Words that rhyme with cast-iron

Comments on cast-iron

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an agreement to stop fighting a war

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