butterweed

2 definitions found

butterweed - Collaborative International Dictionary of English v.0.48 :

  Butterweed \But"ter*weed`\, n. (Bot.)
     An annual composite plant of the Mississippi valley (Senecio lobatus
     ).
     [1913 Webster]

butterweed - WordNet (r) 2.1 (2005) :

  butterweed
      n 1: American ragwort with yellow flowers [syn: butterweed,
           ragwort, Senecio glabellus]
      2: any of several yellow-flowered plants of the genus Packera;
         often placed in genus Senecio