any of several chiefly tropical submerged aquatic plants of the genus Podostemum and related genera, growing in rapidly moving streams.

Nearby words

  1. rivers, larry,
  2. riverscape,
  3. riverside,
  4. riverview,
  5. riverward,
  6. rivet,
  7. rivet set,
  8. riveter,
  9. riveting,
  10. riviera

Origin of riverweed

First recorded in 1665–75; river1 + weed1

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019