Mugwort

from WordNet (r) 3.0 (2006)

mugwort
    n 1: any of several weedy composite plants of the genus
         Artemisia

from The Collaborative International Dictionary of English v.0.48

Mugwort \Mug"wort`\, n. [AS. mucgwyrt. Cf. {Midge}.] (Bot.)
   A somewhat aromatic composite weed ({Artemisia vulgaris}), at
   one time used medicinally; -- called also {motherwort}.
   [1913 Webster]