- A poisonous umbelliferous plant (Cicuta virosa) of Europe; also, any one of several plants of that genus.
- A poisonous plant (/nanthe crocata) resembling the above.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). water hemlock. Retrieved September 26, 2026, from http://smartdefine.org/water_hemlock/definitions/2080915 |
| Chicago | Webster's. 2011. "water hemlock" http://smartdefine.org/water_hemlock/definitions/2080915 (accessed September 26, 2026). |
| Harvard | Webster's 2011, water hemlock, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/water_hemlock/definitions/2080915>. |
| MLA | Webster's. "water hemlock" 28 May 2011. Web. 26 September 2026. <http://smartdefine.org/water_hemlock/definitions/2080915> |