- (n.) An herbaceous European plant (Atropa belladonna) with reddish bell-shaped flowers and shining black berries. The whole plant and its fruit are very poisonous, and the root and leaves are used as powerful medicinal agents. Its properties are largely due to the alkaloid atropine which it contains. Called also deadly nightshade.
- (n.) A species of Amaryllis (A. belladonna); the belladonna lily.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). belladonna. Retrieved September 24, 2026, from http://smartdefine.org/belladonna/definitions/1979369 |
| Chicago | Webster's. 2011. "belladonna" http://smartdefine.org/belladonna/definitions/1979369 (accessed September 24, 2026). |
| Harvard | Webster's 2011, belladonna, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/belladonna/definitions/1979369>. |
| MLA | Webster's. "belladonna" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/belladonna/definitions/1979369> |