Source : Webster's Revised Unabridged Dictionary (1913)

Lakeweed \Lake"weed`\, n. (Bot.)
   The water pepper ({Polygonum Hydropiper}), an aquatic plant
   of Europe and North America.

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.

Culrage \Cul"rage\ (k?l"r?j), n. [OE. culrage, culrache; prob.
   fr. F. cul the buttok + F. & E. rage; F. curage.] (Bot.)
   Smartweed ({Polygonum Hydropiper}).