Definition: The word "heriot" refers to a type of hard or brittle material that can form when iron is exposed to water, leading to cracks in the material. It's known for its distinctive appearance, resembling a rocky or sandy texture, with a characteristic sharp edge. The word 'hard' indicates its high mechanical strength and durability. The definition of "heriot" in English typically refers to a type of hardening process applied to iron ore that causes it to become more brittle when exposed to water. This transformation results from the way iron reacts to changes in conditions such as temperature, humidity, or pressure.