WordReference Random House Unabridged Dictionary of American English © 2025
nar•ce•ine
(när′sē ēn′, -in),USA pronunciation n. [Pharm.]
- Drugsa narcotic alkaloid, C23H27NO8, occurring in opium and acting as a mild relaxant on smooth muscle.
- Greek nárkē numbness (see narco-) + French -ine -ine2
- French narcéine (1832), irregularly