| iron | | |
| n. (substance) | 1. atomic number 26, fe, iron | a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood. |
| ~ metal, metallic element | any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.. |
| ~ alpha iron | a magnetic allotrope of iron; stable below 906 degrees centigrade. |
| ~ beta iron | an allotrope of iron that is the same as alpha iron except that it is nonmagnetic; stable between 768 and 906 degrees centigrade. |
| ~ gamma iron | a nonmagnetic allotrope of iron that is the basis of austenite; stable between 906 and 1403 degrees centigrade. |
| ~ delta iron | an allotrope of iron that is stable between 1403 degrees centigrade and the melting point (= 1532 degrees). |
| ~ ingot iron | iron of high purity. |
| ~ cast iron | an alloy of iron containing so much carbon that it is brittle and so cannot be wrought but must be shaped by casting. |
| ~ wrought iron | iron having a low carbon content that is tough and malleable and so can be forged and welded. |
| ~ steel | an alloy of iron with small amounts of carbon; widely used in construction; mechanical properties can be varied over a wide range. |
| ~ galvanized iron | iron that is coated with zinc to protect it from rust. |
| ~ iron ore | an ore from which iron can be extracted. |
| ~ pig iron | crude iron tapped from a blast furnace. |
| ~ scrap iron | iron to be melted again and reworked. |
| ~ structural iron | iron that has been cast or worked in structural shapes. |
| n. (artifact) | 2. iron | a golf club that has a relatively narrow metal head. |
| ~ driving iron, one iron | (golf) the long iron with the most nearly vertical face. |
| ~ golf-club, golf club, club | golf equipment used by a golfer to hit a golf ball. |
| ~ long iron | an iron with a long shaft and a steep face; for hitting long low shots. |
| ~ five iron, mashie | middle-distance iron. |
| ~ mashie niblick, seven iron | iron with a lofted face for hitting high shots to the green. |
| ~ midiron, two iron | long iron with a nearly vertical face. |
| ~ niblick, nine iron | an iron with considerable loft. |
| ~ putting iron, putter | the iron normally used on the putting green. |
| ~ short iron | an iron with a short shaft and pitched face; for hitting short high shots. |
| ~ wedge | (golf) an iron with considerable loft and a broad sole. |
| n. (artifact) | 3. branding iron, iron | implement used to brand live stock. |
| ~ implement | instrumentation (a piece of equipment or tool) used to effect an end. |
| n. (artifact) | 4. iron, smoothing iron | home appliance consisting of a flat metal base that is heated and used to smooth cloth. |
| ~ flatiron | an iron that was heated by placing it on a stove. |
| ~ gauffer, gauffering iron, goffering iron, goffer | an iron used to press pleats and ridges. |
| ~ home appliance, household appliance | an appliance that does a particular job in the home. |
| ~ steam iron | a pressing iron that can emit steam. |
| ~ travel iron | a small lightweight iron that can be carried while traveling. |
| v. (contact) | 5. iron, iron out, press | press and smooth with a heated iron.; "press your shirts"; "she stood there ironing" |
| ~ heat, heat up | make hot or hotter.; "the sun heats the oceans"; "heat the water on the stove" |
| ~ mangle | press with a mangle.; "mangle the sheets" |
| ~ press | place between two surfaces and apply weight or pressure.; "pressed flowers" |
| adj. | 6. cast-iron, iron | extremely robust.; "an iron constitution" |
| ~ robust | sturdy and strong in form, constitution, or construction.; "a robust body"; "a robust perennial" |
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