Narcotine n. : An alkaloid found in opium, and extracted as a white crystalline substance, tasteless and less poisonous than morphine; -- called also narcotia.

Example:


Taxonomy
Noscapine, street heroin, free encyclopedia, stroke treatment, bond, contaminants, warfarin, Cancer, 6,7,8, tetrahydro, methoxy, methyl, 1,3, 4,5, 5-g, Narcotine, antitussive, stroke patients.

Defination from the web:
... Noscapine (also known as Narcotine, Nectodon, Nospen, and Anarcotine) is a benzylisoquinoline alkaloid from plants of the Papaveraceae family, ...