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Definitions for Iron

[1] Chemistry . a ductile, malleable, silver-white metallic element, scarcely known in a pure condition, but much used in its crude or impure carbon-containing forms for making tools, implements, machinery, etc. Symbol : Fe; atomic weight : 55.847; atomic number : 26; specific gravity : 7.86 at 20°C. Compare cast iron, pig iron, steel, wrought iron.
[2] something hard, strong, rigid, unyielding, or the like: hearts of iron.
[3] an instrument, utensil, weapon, etc., made of iron.
[4] an appliance with a flat metal bottom, used when heated, as by electricity, to press or smooth clothes, linens, etc.
[5] Golf . one of a series of nine iron-headed clubs having progressively sloped-back faces, used for driving or lofting the ball. Compare wood1(def 8) .
[6] a branding iron.
[7] any of several tools, structural members, etc., of metals other than iron.
[8] the blade of a carpenter's plane.
[9] Slang . a pistol.
[10] a harpoon.
[11] Medicine/Medical . a preparation of iron or containing iron, used chiefly in the treatment of anemia, or as a styptic and astringent.
[12] irons, shackles or fetters: Put him in irons!
[13] a sword.
[14] of, containing, or made of iron: an iron skillet.
[15] resembling iron in firmness, strength, color, etc.: an iron will.
[16] stern; harsh; cruel.
[17] inflexible; unrelenting.
[18] strong; robust; healthy.
[19] holding or binding strongly: an iron grip.
[20] irritating or harsh in tone: an iron voice.
[21] to smooth or press with a heated iron, as clothes or linens.
[22] to furnish, mount, or arm with iron.
[23] to shackle or fetter with irons.
[24] Metalworking . to smooth and thin the walls of (an object being deep-drawn).
[25] to press clothes, linens, etc., with an iron.
[26] iron out , to iron or press (an item of clothing or the like). to remove (wrinkles) from by ironing. to resolve or clear up (difficulties, disagreements, etc.): The problem was ironed out months ago.
[27] in irons , Nautical . (of a sailing vessel) unable to maneuver because of the position of the sails with relation to the direction of the wind. Nautical . (of a towing vessel) unable to maneuver because of tension on the towing line. Also into irons. in shackles or fetters.
[28] irons in the fire , matters with which one is immediately concerned; undertakings; projects: He had other irons in the fire, so that one failure would not destroy him.
[29] pump iron , to lift weights as an exercise or in competition.
[30] strike while the iron is hot , to act quickly when an opportunity presents itself.
[31] a malleable ductile silvery-white ferromagnetic metallic element occurring principally in haematite and magnetite. It is widely used for structural and engineering purposes. Symbol: Fe; atomic no: 26; atomic wt: 55.847; valency: 2,3,4, or 6; relative density: 7.874; melting pt: 1538°C; boiling pt: 2862°C See also steel, cast iron, wrought iron, pig iron Related adjectives: ferric, ferrous Related prefix: ferro- (as modifier ) iron railings
[32] any of certain tools or implements made of iron or steel, esp for use when hot a grappling iron ; a soldering iron
[33] an appliance for pressing fabrics using dry heat or steam, esp a small electrically heated device with a handle and a weighted flat bottom
[34] any of various golf clubs with narrow metal heads, numbered from 1 to 9 according to the slant of the face, used esp for approach shots a No. 6 iron
[35] an informal word for harpoon (def. 1)
[36] US slang a splintlike support for a malformed leg
[37] great hardness, strength, or resolve a will of iron
[38] astronomy short for iron meteorite
[39] See shooting iron
[40] strike while the iron is hot to act at an opportune moment
[41] very hard, immovable, or implacable iron determination
[42] very strong; extremely robust an iron constitution
[43] cruel or unyielding he ruled with an iron hand
[44] an iron fist a cruel and unyielding attitude or approach See also velvet (def. 6)
[45] to smooth (clothes or fabric) by removing (creases or wrinkles) using a heated iron; press
[46] (tr) to furnish or clothe with iron
[47] (tr) rare to place (a prisoner) in irons

Words related to Iron

rigid, steely, steel, firm, immovable, unbending, heavy, adamant, thick, cast, pig, coke, chain, handcuffs, fetter, bond, cruel, dense, implacable

Words nearby Iron

irm, irma, irminger current, iro, iroko, iron, iron age, iron blue, iron brick, iron chancellor, iron cross

Origin of Iron

before 900; Middle English, Old English īren (noun and adj.), perhaps < *īsren, metathesized from īsern, variant of īsen; compare Old Saxon, Old High German, Old Norse īsarn, Gothic eisarn < Germanic *īsarnam, perhaps < Celtic; compare Gaulish Ysarno-, Iserno- (in place names), Old Breton hoiarn, Welsh haearn, Old Irish íarn

Other words from Iron

i·ron·less , adjective
i·ron·like , adjective
un·i·roned , adjective
well-i·roned , adjective

Word origin for Iron

Old English irēn; related to Old High German īsan, Old Norse jārn; compare Old Irish īarn

Synonyms for Iron

rigid, steely, adamant, firm, heavy, immovable, steel, thick, unbending, adamantine, cruel, dense, ferric, ferrous, implacable, indomitable, inexorable, insensible, obdurate, relentless, robust, strong, stubborn, unyielding