1. a hard sedimentary rock containing iron ore
Usage: geology
2. a type of hard, durable pottery or stoneware

Examples

• The miners extracted ironstone from the quarry.
• Ironstone deposits were common in this region during the 19th century.
• The geologist identified layers of ironstone in the cliff face.
• She collected vintage ironstone dishes at the antique shop.
• The ironstone pottery was known for its durability.
• Ironstone china became popular in Victorian households.