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, orElodea, Canadensis.) See Anacharis. — Horned pondweed, the Zannichellia palustris, a slender, branching aquatic plant, having pointed nutlets.