riverweed: Meaning and Definition of

riv•er•weed

Pronunciation: (riv'ur-wēd"), [key]
— n.
  1. any of several chiefly tropical submerged aquatic plants of the genus Podostemum and related genera, growing in rapidly moving streams.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.