\ 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

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 Those out early are already competing for cast iron pans, high-end coffee machines and candy from the holiday section, because people are excited to host in-person holiday parties, Stringfield said. Gwendolyn Wu, San Francisco Chronicle, 17 Nov. 2021 Some of the standout deals include this Bissell cordless vacuum for $55 off, this Le Creuset cast iron oven for 40 percent off, and this set of two plush bed pillows for under $30. Alex Warner,, 8 Oct. 2021 The ceilings are eye-catching -- Barrel vaulted brick highlighted by original cast iron beams and columns. Tristan Balagtas,, 19 Oct. 2021 Barry, a local history buff and avid antique collector, says the pipe is cast iron, and those pipes were commonly used 50 to 100 years ago., 6 Oct. 2021 The little oily fish are served whole in a hot cast iron skillet, their meat tender and rich; at the table, your server will pour white wine over them to deglaze the pan. Soleil Ho, San Francisco Chronicle, 17 Sep. 2021 While cast iron is usually very heavy, the brand says this Le Creuset grill pan is the lightest on the market, weighing less than 7 pounds. Sanah Faroke, Southern Living, 23 June 2021 For example, Needles is trying to replace aged and leak-prone pipes made of cast iron, asbestos cement and copper. Ralph Vartabedian, Los Angeles Times, 4 Sep. 2021 Bathrooms offer heated floors and outdoor showers, while cast iron stoves keep things cozy in the bedroom at night. Celeste Moure, Condé Nast Traveler, 31 Aug. 2021

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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Time Traveler for cast-iron

Time Traveler

The first known use of cast-iron was in 1664

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Dictionary Entries Near cast-iron

(cast) in the same mold as


cast iron

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Cite this Entry

“Cast-iron.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2021.

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More Definitions for cast-iron



English Language Learners Definition of cast-iron

 (Entry 1 of 2)

: made of cast iron
: very strong or tough
: 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


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