Source : Webster's Revised Unabridged Dictionary (1913)

Avens \Av"ens\, n. [OF. avence.] (Bot.)
   A plant of the genus {Geum}, esp. {Geum urbanum}, or herb
   bennet.

Bennet \Ben"net\, n. [F. beno[^i]te, fr. L. benedicta, fem. of
   benedictus, p. p., blessed. See {Benedict}, a.] (Bot.)
   The common yellow-flowered avens of Europe ({Geum urbanum});
   herb bennet. The name is sometimes given to other plants, as
   the hemlock, valerian, etc.

Source : WordNet®

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