The Collaborative International Dictionary of English v.0.48:

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.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bennet
    n 1: avens of Virginia having pale or greenish yellow flowers
         [syn: bennet, white avens, Geum virginianum]
    2: North American white-flowered avens [syn: bennet, white
       avens, Geum canadense]