iron in Wingdings is ♓︎❒︎□︎■︎

The most common and most useful metallic element, being ofalmost universal occurrence, usually in the form of an oxide (ashematite, magnetite, etc.), or a hydrous oxide (as limonite, turgite,etc.). It is reduced on an enormous scale in three principal forms;viz., cast iron, steel, and wrought iron. Iron usually appears darkbrown, from oxidation or impurity, but when pure, or an freshsurface, is a gray or white metal. It is easily oxidized (rusted) bymoisture, and is attacked by many corrosive agents. Symbol Fe (LatinFerrum). Atomic weight 55.9. Specific gravity, pure iron, 7.86; castiron, 7.1. In magnetic properties, it is superior to all othersubstances.