meniscus

Founding-era definition · Webster's 1828 American Dictionary

MENIS'CUS, noun plural meniscuses. [Gr. a little moon.] A lens convex on one side, and concave on the other.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI

More founding-era words: liberty · virtue · republic · justice · providence · commerce · militia · arms · prudence · establishment · religion · usurpation · tyranny · citizen · unalienable · sovereign