noun
- Erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States.
- synonyms: horse balm, stoneroot, stone-root, richweed, stone root, Collinsonia canadensis
- Common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron.
- synonyms: Canadian fleabane, fleabane, Conyza canadensis, Erigeron canadensis
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). horseweed. Retrieved September 20, 2026, from http://smartdefine.org/horseweed/definitions/1325037 |
| Chicago | WordNet. 2010. "horseweed" http://smartdefine.org/horseweed/definitions/1325037 (accessed September 20, 2026). |
| Harvard | WordNet 2010, horseweed, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/horseweed/definitions/1325037>. |
| MLA | WordNet. "horseweed" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/horseweed/definitions/1325037> |