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

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

(obsolete) ironically

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

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

(mineralogy) The mineral arsenopyrite.

(physics) A minor stable isotope of iron, ⁵⁴₂₆Fe, having 26 protons and 28 neutrons; it amounts to about 6% of the element in nature

(physics) A minor stable isotope of iron, ⁵⁷₂₆Fe, having 26 protons and 31 neutrons; it amounts to about 2% of the element in nature