atropine (n.) Look up atropine at Dictionary.com
also atropin, "poisonous crystalline alkaloid obtained from nightshade," 1831, from Latin atropa "deadly nightshade" (from which the alkaloid poison is extracted), from Greek atropos "inflexible, unchangeable," also the name of one of the Fates (see Atropos) + chemical suffix -ine (2). By 1821 in French and German.