Found 2 items, similar to water shamrock.
English → English (WordNet) Definition: water shamrock water shamrock n : 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: buckbean, bogbean, bog myrtle , marsh trefoil, Menyanthes trifoliata]
English → English (gcide) Definition: water shamrock 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]