A barrier made of iron in the theatre, lowered between the stage and the auditorium for safety or to prevent communication. / (idiomatic) Any impenetrable barrier.

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

(golf) An iron golf club with more lift than a driver.

plural of iron horse

(transport) A railroad steam locomotive.

(intransitive) To use a sadiron. / (transitive) To press with a sadiron.

(computing, slang, humorous, dated) Large, expensive, powerful computers such as mainframes.

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.

(rare) the beak (tapered end) of an anvil