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
climbing perch: a small perch of India whose gills are modified to allow it to breathe air; has spiny pectoral fins that enable it to travel on land