morphine Meaning, Definition & Usage

  1. noun an alkaloid narcotic drug extracted from opium; a powerful, habit-forming narcotic used to relieve pain
    morphia.

WordNet

Mor"phine noun
Etymology
From Morpheus: cf. F. morphine.
Definitions
  1. (Chem.) A bitter white crystalline alkaloid found in opium, possessing strong narcotic properties, and much used as an anodyne; -- called also morphia, and morphina.

Webster 1913