Search Result for "butterweed": 
Wordnet 3.0

NOUN (2)

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; 



The 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]


WordNet (r) 3.0 (2006):

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