Bible Dictionaries
Onyx

Webster's Dictionary

(n.) Chalcedony in parallel layers of different shades of color. It is used for making cameos, the figure being cut in one layer with the next as a ground.

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