(golf) An iron golf club which can be used as a driver.

(idiomatic, dated) bad luck.

(slang) A simple harmonica

Cold-rolled steel as a material used for a horse's bit.

simple past tense and past participle of iron out

plural of iron curtain

An alloy of iron, carbon, and silicon that contains 1.7 to 4.5% carbon and 1 to 3% silicon.

A kind of cast iron that contains carbon as cementite, unlike gray iron, which contains carbon as graphite.

(obsolete, especially in plural) A tool used to remove the bark from trees. / (dated, slang) A pistol.

(mineralogy) The mineral arsenopyrite.