Video shows what iron means. A common, inexpensive metal, often black in color, that rusts, is attracted by magnets, and is used in making steel.. A metallic chemical element having atomic number 26 and symbol Fe.. Any material, not a steel, predominantly made of elemental iron.. iron synonyms: ferrum, shackles, poof, queer, flatiron, smoothing iron, energy, force. iron pronunciation. How to pronounce, definition by Wiktionary dictionary. iron meaning. Powered by MaryTTS