Eupatorium
Pronunciation : Eu`pa*to"ri*um
Part of Speech : n.
Etymology : [NL., fr. Eupator, king of Pontus, said to have used it as a medicine.] (Bot.)
Definition : Defn: A genus of perennial, composite herbs including hemp agrimony, boneset, throughwort, etc.
Source : Webster's Unabridged Dictionary, 1913