iron

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

Definition of iron

 (Entry 1 of 3)

1 : a silver-white malleable ductile magnetic heavy metallic element that readily rusts in moist air, occurs in pure form in meteorites and combined in most igneous rocks, is the most abundant element on Earth by mass, and is vital to biological processes — see Chemical Elements Table
2 : something made of iron: such as
a : a household device usually with a flat metal base that is heated to smooth, finish, or press (such as cloth)
b : any of a series of numbered golf clubs having relatively thin metal heads — compare wood
c irons plural : shackles for the hands or legs
d : a heated metal implement used for branding or cauterizing
e : stirrup usually used in plural
3 : great strength, hardness, or determination
iron in the fire
1 : a matter requiring close attention
2 : a prospective course of action

iron

adjective

Definition of iron (Entry 2 of 3)

1 : of, relating to, or made of iron
2 : resembling iron
3a : strong and healthy : robust an iron constitution
b : inflexible, unrelenting iron determination
c : holding or binding fast an iron grip

iron

verb
ironed; ironing; irons

Definition of iron (Entry 3 of 3)

transitive verb

1a : to smooth with or as if with a heated iron iron a shirt
b : to remove (something, such as wrinkles) by ironing
2 : to shackle with irons
3 : to furnish or cover with iron

intransitive verb

: to smooth or press cloth or clothing with a heated iron

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Other Words from iron

Adjective

ironness \ ˈī(-​ə)rn-​nəs How to pronounce iron (audio) \ noun

Synonyms & Antonyms for iron

Synonyms: Noun

Synonyms: Adjective

Antonyms: Adjective

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Examples of iron in a Sentence

Adjective he had an iron determination to succeed in on Wall Street
Recent Examples on the Web: Noun Offered first to Porsche 918 Spyder owners, allocation evaporated like water in a hot cast-iron skillet, while demand in North America and abroad inflamed the passions and ire of tens of thousands of would-be buyers. Robert Ross, Robb Report, 30 Aug. 2021 Coat bottom and sides of a 12-inch cake pan, Chicago-style pizza pan or cast-iron skillet with melted butter. Tribune News Service, cleveland, 30 Aug. 2021 Add 1 tablespoon oil to a 10-inch cast-iron skillet, swirling to coat. Lyda Jones Burnette, Country Living, 11 Aug. 2021 Looking for a new cast-iron skillet to level up your supper game? Gina Vaynshteyn, Glamour, 10 Aug. 2021 Use a cast-iron skillet, small sheet pan, or metal plate. Matt Jancer, Wired, 4 Aug. 2021 Thanks to the pit’s add-on grilling kit ($380), the couple was able to cook three items at a time: charring meat on the Searplate, sauteing vegetables in a cast-iron skillet on the lower grill and toasting buns on the upper. Kelsey Ogletree, WSJ, 3 Aug. 2021 Heat a large cast-iron skillet over high heat, on the stove or a grill, for 1 minute. Washington Post, 29 July 2021 Preheat a large cast-iron skillet or griddle over medium-high heat. Janelle Bitker, San Francisco Chronicle, 8 July 2021 Recent Examples on the Web: Adjective For my anti-iron lifestyle, the Nori is a clear winner. Rachel Besser, Vogue, 20 Aug. 2021 The broad bill is a moratorium of sorts and covers any kind of hard rock, or non-iron ore, mine anywhere in Minnesota. Jennifer Bjorhus, Star Tribune, 13 Jan. 2021 Efforts to slow copper-mining's advance into Minnesota are intensifying, with state lawmakers backing a prohibitive measure that would require mining companies to show proof that a similar non-iron, hard rock mine has operated safely elsewhere. Jennifer Bjorhus, Star Tribune, 13 Jan. 2021 For men who need to look sharp on a budget, these Nordstrom athletic-fit non-iron chinos are just the ticket. Nicole Briese, USA TODAY, 13 Dec. 2020 Check out this Nordstrom trim-fit non-iron dress shirt, which drops from $39.50 to $19.75 in the Red Ruby hue. Arielle Tschinkel, USA TODAY, 29 July 2020 Check out this Nordstrom traditional fit non-iron dress shirt, which drops a full 70% in select colors and sizing from $49.50 to $14.85. Nicole Briese, USA TODAY, 10 July 2020 In ancient seas, iron aplenty To learn how iron fertilization might work in the future, some researchers are looking at the past, in paleoclimate records such as ice cores and deep-sea sediments. Emily Underwood, Smithsonian Magazine, 6 Jan. 2020 Recent Examples on the Web: Verb Abu’s shirts always, but especially on holiday, and why Jessica looks like a famous person who doesn’t iron anybody’s shirts. Zainab Shah, Bon Appétit, 11 Aug. 2021 Iron the underside of the cuff first then flip it over and iron the outerside. Jamie Kim, Good Housekeeping, 7 May 2021 The Lakers would prefer to iron all of this out on the practice court, allowing for Davis to try and get his legs while figuring out how to best function alongside new-ish center Andre Drummond. Dan Woike, Los Angeles Times, 22 Apr. 2021 Mayor Bill de Blasio should have stepped in and instructed the NYPD Commissioner to iron things out with the Inspector General and provide the requested records. Topher Sanders, ProPublica, 15 Apr. 2021 If the suede has been wrinkled in the process, don't iron! Sara Rodrigues, House Beautiful, 23 Feb. 2021 Pedroia identified some glitches in Dalbec’s swing, and the two worked to iron them out in the batting cage. Alex Speier, BostonGlobe.com, 2 Feb. 2021 But then her husband is easily maddened: While disposing of the household meat, his wife has forgotten to iron his white shirt. Bindu Bansinath, Bon Appétit, 8 Dec. 2020 Many graves contained pottery; others featured a smattering of weapons, from a sword to iron spearheads and at least one shield. Alex Fox, Smithsonian Magazine, 18 Sep. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word '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 iron

Noun

before the 12th century, in the meaning defined at sense 1

Adjective

before the 12th century, in the meaning defined at sense 1

Verb

15th century, in the meaning defined at transitive sense 3

History and Etymology for iron

Noun

Middle English, from Old English īsern, īren; akin to Old High German īsarn iron

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Time Traveler for iron

Time Traveler

The first known use of iron was before the 12th century

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Dictionary Entries Near iron

iroko

iron

Iron Age

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Statistics for iron

Last Updated

12 Sep 2021

Cite this Entry

“Iron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/iron. Accessed 21 Sep. 2021.

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More Definitions for iron

iron

noun

English Language Learners Definition of iron

 (Entry 1 of 3)

: a heavy type of metal that is very common, occurs naturally in blood, and is used to make steel and in many products
: a device with a flat metal base that is heated and is used to press wrinkles out of clothing
: a golf club that has a metal head and is identified by a number

iron

adjective

English Language Learners Definition of iron (Entry 2 of 3)

: made of iron
: very strong

iron

verb

English Language Learners Definition of iron (Entry 3 of 3)

: to use a heated iron to make clothing or fabric smooth

iron

noun
\ ˈī-ərn How to pronounce iron (audio) \

Kids Definition of iron

 (Entry 1 of 3)

1 : a heavy silvery white metallic chemical element that rusts easily, is strongly attracted by magnets, occurs in meteorites and combined in minerals, and is necessary for transporting oxygen in the blood
2 : a device that is heated and used for making cloth smooth
3 : a device that is heated to perform a task a soldering iron
4 irons plural : handcuffs or chains used to bind or to hinder movement

iron

adjective

Kids Definition of iron (Entry 2 of 3)

1 : made of iron
2 : strong and healthy He has an iron constitution.
3 : not giving in an iron will

iron

verb
ironed; ironing

Kids Definition of iron (Entry 3 of 3)

: to press with a heated iron

iron

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

Medical Definition of iron

1 : a heavy malleable ductile magnetic silver-white metallic element that readily rusts in moist air, occurs native in meteorites and combined in most igneous rocks, is the most used of metals, and is vital to biological processes (as in transport of oxygen in the body) symbol Fe — see Chemical Elements Table
2 : iron chemically combined iron in the blood

Other Words from iron

iron adjective

More from Merriam-Webster on iron

Nglish: Translation of iron for Spanish Speakers

Britannica English: Translation of iron for Arabic Speakers

Britannica.com: Encyclopedia article about iron

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