<p><strong>Noun:</strong></p><ul><li>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.: Fe; 55.847; 26; 7.86 at 20°C</li><li>Compare cast iron, pig iron, steel, wrought iron</li><li>something hard, strong, rigid, unyielding, or the like: hearts of iron</li><li>an instrument, utensil, weapon, etc., made of iron</li><li>an appliance with a flat metal bottom, used when heated, as by electricity, to press or smooth clothes, linens, etc.</li><li>Golf: one of a series of nine iron-headed clubs having progressively sloped-back faces, used for driving or lofting the ball</li><li>a branding iron</li><li>any of several tools, structural members, etc., of metals other than iron</li><li>the blade of a carpenter's plane</li><li>Slang: a pistol</li><li>a harpoon</li><li>Medicine/Medical: a preparation of iron or containing iron, used chiefly in the treatment of anemia, or as a styptic and astringent</li><li>irons, shackles or fetters: Put him in irons!</li><li>a sword</li></ul><p><strong>Adjective:</strong></p><ul><li>of, containing, or made of iron: an iron skillet</li><li>resembling iron in firmness, strength, color, etc.: an iron will</li><li>stern; harsh; cruel: the iron reign of a tyrant</li><li>inflexible; unrelenting: Our club's iron rule is to treat everyone like family</li><li>strong; robust; healthy: She lived well into her 90's with a sunny disposition and iron constitution</li><li>holding or binding strongly: The country is in the icy, iron grip of the beast from the east, bitter Siberian winds that have trapped us in winter</li><li>irritating or harsh in tone: an iron voice</li></ul><p><strong>Verb (used with object):</strong></p><ul><li>to smooth or press with a heated iron, as clothes or linens</li><li>to furnish, mount, or arm with iron</li><li>to shackle or fetter with irons</li><li>Metalworking: to smooth and thin the walls of (an object being deep-drawn)</li></ul><p><strong>Verb (used without object):</strong></p><ul><li>to press clothes, linens, etc., with an iron</li></ul><p><strong>Verb Phrase:</strong></p><ul><li>to iron or press (an item of clothing or the like)</li><li>to remove (wrinkles) from by ironing</li><li>to resolve or clear up (difficulties, disagreements, etc.): The problem was ironed out months ago</li></ul>