Ironstone (noun)

1. A type of sedimentary rock composed primarily of iron oxides, such as hematite and magnetite.
2. A type of pottery, typically in a reddish-brown color, that is made from a type of iron-rich clay.
3. A type of stoneware made from fine-grained clay and fired at high temperature, typically used for tableware or decorative objects.

Origin:

Early 19th century: from iron + stone.

Examples:

1. The ironstone rock formations provided an important source of iron ore for the local industries.
2. The ironstone pottery was prized for its durability and resistance to heat.
3. The ironstone china was valued for its elegant and simple design.
4. The ironstone mine was one of the largest and most productive in the country.
5. The ironstone sculpture was created by a local artist and depicted the history and heritage of the region.