rosinweed

2 definitions found

rosinweed - Collaborative International Dictionary of English v.0.48 :

  Rosinweed \Ros"in*weed`\, n. (Bot.)
     (a) The compass plant. See under Compass.
     (b) A name given in California to various composite plants
         which secrete resins or have a resinous smell.
         [1913 Webster]

rosinweed - WordNet (r) 2.1 (2005) :

  rosinweed
      n 1: North American perennial having a resinous odor and yellow
           flowers [syn: rosinweed, Silphium laciniatum]
      2: any of various western American plants of the genus Grindelia
         having resinous leaves and stems formerly used medicinally;
         often poisonous to livestock [syn: gumweed, gum plant,
         tarweed, rosinweed]