Pond"weed` (?), n. Bot.
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, ∨ Elodea, Canadensis.) See Anacharis. -- Horned pondweed, the Zannichellia palustris, a slender, branching aquatic plant, having pointed nutlets.
© Webster 1913.