pondweed
nounUK /ˈpɒndwiːd/
US /ˈpɑːndwiːd/
Pondweed is a green plant that grows in ponds and slow rivers.
The ducks swam through the thick pondweed near the shore.
OTHER MEANINGS
2. Any of various rooted or floating water plants of the genus Potamogeton.
Potamogeton pondweed provides shelter for small fish.
3. A common name for several unrelated water plants, such as Elodea.
The aquarium was filled with bright green pondweed.
4. Plant material from ponds used as fertilizer or animal feed.
Farmers gathered pondweed from the shallow lake.