Water plantain

from WordNet (r) 3.0 (2006)

water plantain
    n 1: marsh plant having clusters of small white or pinkish
         flowers and broad pointed or rounded leaves [syn: {water
         plantain}, {Alisma plantago-aquatica}]

from The Collaborative International Dictionary of English v.0.48

Plantain \Plan"tain\, n. [F., fr. L. plantago. Cf. {Plant}.]
   (Bot.)
   Any plant of the genus {Plantago}, but especially the
   {Plantago major}, a low herb with broad spreading radical
   leaves, and slender spikes of minute flowers. It is a native
   of Europe, but now found near the abode of civilized man in
   nearly all parts of the world.
   [1913 Webster]

   {Indian plantain}. (Bot.) See under {Indian}.

   {Mud plantain}, a homely North American aquatic plant
      ({Heteranthera reniformis}), having broad, reniform
      leaves.

   {Rattlesnake plantain}, an orchidaceous plant ({Goodyera
      pubescens}), with the leaves blotched and spotted with
      white.

   {Ribwort plantain}. See {Ribwort}.

   {Robin's plantain}, the {Erigeron bellidifolium}, a common
      daisylike plant of North America.

   {Water plantain}, a plant of the genus {Alisma}, having acrid
      leaves, and formerly regarded as a specific against
      hydrophobia. --Loudon.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Water plantain \Wa"ter plan"tain\ (Bot.)
   A kind of plant with acrid leaves. See under 2d {Plantain}.
   [1913 Webster]