NEPHRITE, noun A mineral, a subspecies of jade, of a leek green color, massive and in rolled pieces. It occurs in granite and gnesis, and is remarkable for its hardness and tenacity. It was formerly worn as a remedy for diseases of the kidneys, but is now cut into handles of sabers and daggers.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI