horn·​stone ˈhȯrn-ˌstōn How to pronounce hornstone (audio)
: a mineral that is a variety of quartz much like flint but more brittle

Word History

First Known Use

1728, in the meaning defined above

Time Traveler
The first known use of hornstone was in 1728

Dictionary Entries Near hornstone

Cite this Entry

“Hornstone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hornstone. Accessed 19 Apr. 2024.

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