Definition of waterweed in English:



mass noun
  • 1Any aquatic plant with inconspicuous flowers.

    ‘slimy green waterweed’
    • ‘I grimaced, I hated pickled waterweed, and by the face mother pulled when she ate it, I suspect she did too.’
    • ‘One had tresses of green waterweed hanging in her eyes.’
    • ‘He sat on the rock, undulating like a waterweed, brie in one hand, knife in the other.’
  • 2A submerged aquatic American plant which is grown in ornamental ponds.

    Genus Elodea, family Hydrocharitaceae: several species, in particular Canadian pondweed

    • ‘Be sure to include submergent plants such as common waterweed and hornwort for their high oxygen output.’