horseweed

2 definitions found

horseweed - Collaborative International Dictionary of English v.0.48 :

  Horseweed \Horse"weed`\, n. (Bot.)
     A composite plant (Erigeron Canadensis), which is a common
     weed.
     [1913 Webster]

horseweed - WordNet (r) 2.1 (2005) :

  horseweed
      n 1: erect perennial strong-scented with serrate pointed leaves
           and a loose panicle of yellowish flowers; the eastern
           United States [syn: horse balm, horseweed, stoneroot,
           stone-root, richweed, stone root, Collinsonia canadensis
           ]
      2: common North American weed with linear leaves and small
         discoid heads of yellowish flowers; widely naturalized
         throughout temperate regions; sometimes placed in genus
         Erigeron [syn: horseweed, Canadian fleabane, fleabane,
         Conyza canadensis, Erigeron canadensis]