'Hydropiper' definitions:
Definition of 'Hydropiper'
From: GCIDE
- 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]