The Collaborative International Dictionary
Narceine \Nar"ce*ine\, n. [L. narce numbness, torpor, Gr. ?????: cf. F. narc['e]["i]ne.] (Chem.) An alkaloid found in small quantities in opium, and extracted as a white crystalline substance of a bitter astringent taste. It is a narcotic. Called also narceia.
Wiktionary
n. (context pharmacy English) An alkaloid contained in opium, occurring as fine white, silky crystals, slightly soluble in water, used as a substitute for morphine.
Wikipedia
Narceine is an opium alkaloid produced by the Papaver somniferum (opium poppy) plant. It is a bitter, crystalline compound with narcotic effects. It was formerly used as a substitute for morphine. Its name is derived from the Greek (nárkē), meaning numbness, and the postfix -ine referring to an alkaloid.
Usage examples of "narceine".
All the derivatives of opium such as morphine, codeine, heroine, dionine, narceine, and narcotine, to say nothing of bromure d'etyle, bromoform, nitrite d'amyle, and amyline are known to be utilised by the endormeurs to put their victims to sleep, and the skill which they have acquired in the use of these powerful drugs establishes them as one of the most dangerous groups of criminals in existence.