water shamrock
NounWordNet 3.0
Noun (1)
- 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 surfaceSynonyms: water shamrockbuckbeanbogbeanbog myrtlemarsh trefoilMenyanthes trifoliata
Webster's Dictionary (GCIDE)
bogbean \bogbean\ n. a perennial plant of Europe and America (Menyanthes trifoliata) having racemes of white or purplish flowers and intensely bitter trifoliate leaves; often rooting at the water margin and spreading across the surface; -- called also bog myrtle, water shamrock and marsh trefoil.
Syn: water shamrock, buckbean, bog myrtle, marsh trefoil. [WordNet 1.5]