Horseweed
Horse´weed`
| n. | 1. | (Bot.) A composite plant (Erigeron Canadensis), which is a common weed. |
| Noun | 1. |  horseweed - erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States |
| 2. | horseweed - common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron |