Definition from Wiktionary, the free dictionary
- IPA: /ˈmɔrfiːn/
- A crystalline alkaloid (7,8-didehydro-4,5-epoxy-17-methyl-morphinan-3,6-diol), extracted from opium, the salts of which are soluble in water and are used as analgesics, anaesthetics and sedatives; it is one of a group of morphine alkaloids.
- See also Wikisaurus:recreational drug
See also 
morphine f (usually uncountable)
- “morphine” in the Dictionnaire de l’Académie française, 8th Edition (1932–35).