pondweed
n. நிலை நீர்ப் பூண்டு.
Pond"weed`, n. (Bot.) Defn: Any aquatic plant of the genus Potamogeton, of which many species are found in ponds or slow-moving rivers. Choke pondweed, an American water weed (Anarcharis, or Elodea, Canadensis.) See Anacharis. -- Horned pondweed, the Zannichellia palustris, a slender, branching aquatic plant, having pointed nutlets.