clover fern

Từ điển WordNet v3.1 - WordNet Dictionary

noun

any of several water ferns of the genus Marsilea having four leaflets
• Syn:
pepperwort
• Hypernyms:
aquatic fern, water fern
• Hyponyms:
nardoo, nardo, common nardoo, Marsilea drummondii, water clover, Marsilea quadrifolia
• Member Holonyms:
Marsilea, genus Marsilea