pondweed

• 指眼子菜科（Potamogetonaceae）等多种沉水或漂浮的多年生淡水水生植物，也泛指池沼中的水草。

A noun referring to any of several submerged or floating freshwater perennial aquatic weeds belonging to the family Potamogetonaceae.

1. Aquatic plantC1formal

   Any of several submerged or floating freshwater perennial aquatic weeds belonging to the family Potamogetonaceae.

   眼子菜

   • Pondweed grows abundantly in the shallow waters of the lake.
   • The biologist identified several species of pondweed in the pond.
   • Dense patches of pondweed provide shelter for small fish.

   同义词potamogeton

2. C1formal

   A type of submerged freshwater perennial plant that grows in still or slow-moving water.

   沉水淡水多年生植物

   • Submerged pondweed helps oxygenate the water in aquariums.
   • The pond was choked with pondweed after the warm summer.
   • Ducks often feed on the tender leaves of pondweed.