The Collaborative International Dictionary of English v.0.48:

cloveroot \cloveroot\ n.
   a hairy Eurasian plant (Geum urbanum) with small yellow
   flowers and an astringent root formerly used medicinally.

   Syn: herb bennet, wood avens, Geum urbanum.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

cloveroot
    n 1: hairy Eurasian plant with small yellow flowers and an
         astringent root formerly used medicinally [syn: herb
         bennet, cloveroot, clover-root, wood avens, Geum
         urbanum]