Bible Dictionaries
Hornstone

Webster's Dictionary

(n.) A siliceous stone, a variety of quartz, closely resembling flint, but more brittle; - called also chert.

Bibliography Information
Webster, Noah. Entry for 'Hornstone'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​h/hornstone.html. 1828.