duckweed

Từ điển WordNet v3.1 - WordNet Dictionary

noun

any small or minute aquatic plant of the family Lemnaceae that float on or near the surface of shallow ponds
• Hypernyms:
aquatic plant, water plant, hydrophyte, hydrophytic plant
• Hyponyms:
common duckweed, lesser duckweed, Lemna minor, star-duckweed, Lemna trisulca,
Lemna trisulca, water flaxseed, Spirodela polyrrhiza, watermeal, mud midget,
bogmat, Wolffiella gladiata
• Member Holonyms:
Lemnaceae, family Lemnaceae, duckweed family