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Noun: water shamrock
  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 surface
    - buckbean, bogbean, bog myrtle, marsh trefoil, Menyanthes trifoliata

Derived forms: water shamrocks


Part of: genus Menyanthes, Menyanthes