Определение buck bean в Английский Язык Английский Язык словарь
A plant (Menyanthes trifoliata) which grows in moist and boggy places, having racemes of white or reddish flowers and intensely bitter leaves, sometimes used in medicine; marsh trefoil; called also bog bean
water shamrock: 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