Real Dictionary

iron
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 dens
a pipe, shaft, etc, that is used to convey smoke or gases, esp one that connects a furnace to a chimney [...]
an excessive load [...]
Iron is an element which usually takes the form of a hard, dark-grey metal. It is used to make steel, and also forms part of many tools, buildings, and vehicles. Very small amounts of iron occur in your blood and in food.
the act of acquiring or gaining possession [...]
the maintenance of metabolic equilibrium within an animal by a tendency to compensate for disrupting changes [...]
the sum total of the chemical processes that occur in living organisms, resulting in growth, production of energy, elimination of waste material, etc [...]