Meaning

noun a poisonous crystalline alkaloid extracted from the nightshade family; used as an antispasmodic and to dilate the eye pupil; also administered in large amounts as an antidote for organophosphate nerve

originEtymology tree Latin Atropa Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine English atropine From Latin Atropa (“genus of deadly nightshade”) + English -ine.

Etymology from Wiktionary, CC BY-SA 3.0