morphine

/ˈmɔː.fiːn/

IPA: /M AO1 R F IY0 N/

noun
  1. 1

    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.

Source: https://en.wiktionary.org/wiki/morphine