The Collaborative International Dictionary of English v.0.48:

Fumitory \Fu"mi*to*ry\, n. [OE. fumetere, F. fumeterre, prop.,
   smoke of the ground, fr. L. fumus smoke + terra earth. See
   Fume, and Terrace.] (Bot.)
   The common uame of several species of the genus Fumaria,
   annual herbs of the Old World, with finely dissected leaves
   and small flowers in dense racemes or spikes. F.
   officinalis is a common species, and was formerly used as an
   antiscorbutic.
   [1913 Webster]

   Climbing fumitory (Bot.), the Alleghany vine (Adlumia
      cirrhosa); a biennial climbing plant with elegant
      feathery leaves and large clusters of pretty white or
      pinkish flowers looking like grains of rice.
      [1913 Webster]

WordNet (r) 3.0 (2006):

fumitory
    n 1: delicate European herb with greyish leaves and spikes of
         purplish flowers; formerly used medicinally [syn:
         fumitory, fumewort, fumeroot, Fumaria officinalis]