codeine

co·deine

noun \ˈkō-ˌdēn, ˈkōd-ē-ən\

Definition of CODEINE

: a morphine derivative that is found in opium, is weaker in action than morphine, and is used especially in the form of its sulfate (C₁₈H₂₁NO₃)₂·H₂SO₄ or phosphate C₁₈H₂₁NO₃·H₃PO₄ especially as an analgesic and an antitussive