- atropine - 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 agents or organophosphate insecticides
--1 is a kind of alkaloid; antispasmodic, spasmolytic, antispasmodic agent; poison, poisonous substance; mydriatic, mydriatic drug; antidote, counterpoison
--1 has particulars: belladonna