Narcotic

a. [Gr. ναρκωτικός, from ναρκοῦν, to benumb; Fr. narcotique, It. & Sp. narcotico. See supra.] (Med.) (a.) Allaying morbid susceptibility, relieving pain, and producing sleep;—said of medicinal doses. (b.) Producing stupor, coma, and convulsions, and, when given in sufficient quantity, causing death;—said of poisonous doses.