buckbean

Từ điển WordNet v3.1 - WordNet Dictionary

noun

perennial plant of Europe and America having racemes of white or purplish flowers and intensely bitter trifoliate leaves;
often rooting at water margin and spreading across the surface
• Syn:
water shamrock, bogbean, bog myrtle, marsh trefoil, Menyanthes trifoliata
• Hypernyms:
aquatic plant, water plant, hydrophyte, hydrophytic plant
• Member Holonyms:
Menyanthes, genus Menyanthes