gypsywort

from WordNet (r) 3.0 (2006)

gypsywort
    n 1: hairy Eurasian herb with two-lipped white flowers [syn:
         {gipsywort}, {gypsywort}, {Lycopus europaeus}]

from The Collaborative International Dictionary of English v.0.48

Gypsywort \Gyp"sy*wort`\ (j[i^]p"s[i^]*w[^u]rt`), n. (Bot.)
   A labiate plant (the {Lycopus Europ[ae]us}). Gypsies are said
   to stain their skin with its juice.
   [1913 Webster]