What does hornstone mean?
Hornstone is a hard, dark, siliceous stone whose appearance and texture can resemble animal horn. In geology, it commonly refers to a variety of chert, a microcrystalline form of silica, although classifications differ and the name may also cover related fine-grained stones. Archaeologists use the term especially for hornstone used to make tools, blades, and weapons because the material fractures sharply and can be shaped into durable edges. In that context, it describes the material rather than one particular artifact. The word is less common than the broader terms "chert" and "flint," but it remains useful when discussing stone with a horn-like appearance or a dense, high-quality source of toolmaking material. Its striking name reflects a long-standing observation: the stone can look rather like the hard keratinous material growing from an animal's skull.
nounA hard, dark, siliceous rock resembling horn, especially a variety of chert. The term is also used in archaeology for chert or similar fine-grained stone used to make tools.
- A hard, dark variety of chert with a smooth or conchoidal fracture, used in some classifications of siliceous stone.
- Archaeologically, a fine-grained siliceous stone, particularly chert, used for making tools and weapons.
"The archaeologists discovered arrowheads fashioned from fine-grained hornstone."
"The blade was made from a carefully selected flake of hornstone."
"The deposit contains nodules of hornstone suitable for pressure-flaking."
Plural when referring to multiple pieces or deposits of the stone.
"The site contains several large hornstones that were worked into blades."
Named for the way its lustrous, tough surface can resemble animal horn, hornstone has helped humans shape sharp tools for thousands of years.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does hornstone come from?
Hornstone is an English compound formed from "horn" and "stone," referring to a stone resembling horn. Comparable words exist in other European languages, notably German Hornstein, which likewise literally means "horn stone." The term developed as a descriptive name for siliceous stones with a compact, horn-like appearance long before it acquired a specialized archaeological and geological use.
How hornstone is actually used
The term is more specialized than the everyday word "stone" and may sound technical in geology and archaeology. "Flint" overlaps with it in ordinary usage, though the two terms are not always interchangeable in precise mineral classification.
Easily confused with hornstone
Hornstone is a siliceous rock related to chert, whereas hornblende is an amphibole mineral.