hydropiper

1 definition found

hydropiper - Collaborative International Dictionary of English v.0.48 :

  Hydropiper \Hy"dro*pi`per\, n. [NL., fr. Gr. "y`dwr water + L.
     piper a pepper.] (Bot.)
     A species (Polygonum Hydropiper) of knotweed with acrid
     foliage; water pepper; smartweed.
     [1913 Webster]