\ 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 My mother prepared our Thanksgiving feast in one large cast iron skillet. Los Angeles Times, "Twenty years later, the memory of Thanksgiving leftovers in Ensenada still nourishes the soul," 19 Nov. 2020 Each course will arrive family-style in a cast iron pot for DIY distribution. Michael Russell, oregonlive, "‘Top Chef’ star Gregory Gourdet to preview new restaurant Kann in temporary SE Portland yurt village," 16 Nov. 2020 In a saute pan or cast iron skillet, heat olive oil over medium-low heat for 2 minutes. San Diego Union-Tribune, "Celebrating Indigenous culture with Haudenosaunee boiled cornbread," 11 Nov. 2020 Autumn in Louisiana stokes cravings for cast iron cooking, the gumbos and jambalayas and fricassees, the stuff of holiday parties, football weekends and whatever else brings people together in leisure. Ian Mcnulty | Staff Writer,, "On the ‘Andouille Trail,’ exploring a River Parishes obsession link by link," 9 Nov. 2020 Here are three things to consider when choosing a cast iron cleaner. The Editors, Field & Stream, "Three Things to Consider When Choosing a Cast Iron Cleaner," 5 Nov. 2020 My preferred way to handle veggies is to cook a medley in a large cast iron skillet. Chuck Blount,, "Chuck’s Food Shack: Grilling seasonal vegetables such as squash, sweet potatoes unleashes the flavors of fall," 2 Nov. 2020 On an early Monday morning, Scott Bitikofer and his team gathered around a manhole across from a dormitory at Rollins College, lifted the heavy cast iron lid and snaked a tube down the shaft toward the sewer line. Naseem S. Miller,, "Rollins Colleges taps into wastewater to track COVID-19 on campus," 23 Oct. 2020 As a reviewer of oft-frivolous things, I'm impressed by still-functioning, ancient items like cast iron pans, insulated thermoses, and hundred-year-old sewing machines. Parker Hall, Wired, "How to Build a Vintage Audio System That Will Last Forever," 15 Oct. 2020

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

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The first known use of cast-iron was in 1664

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Statistics for cast-iron

Cite this Entry

“Cast-iron.” Dictionary, Merriam-Webster, Accessed 24 Nov. 2020.

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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

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