Eupatorium

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Eupatorium \Eu`pa*to"ri*um\, n. [NL., fr. Eupator, king of
     Pontus, said to have used it as a medicine.] (Bot.)
     A genus of perennial, composite herbs including hemp
     agrimony, boneset, throughwort, etc.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  Eupatorium
       n : large genus of chiefly tropical herbs having heads of white
           or purplish flowers [syn: {genus Eupatorium}]