c.1400, "plant reputed to contain antivenom," from O.Fr. serpentin
), from L.L. serpentius
"of a serpent," from L. serpentem
) "snake" (see serpent
). As the name of a greenish mineral, attested from early 15c. The adj. meaning "twisting, winding" first recorded 1610s (an earlier adj. meaning "having the evil qualities of a serpent" is recorded from late 14c.). The winding lake of that name in Hyde Park, London, was constructed in 1730.