Water plantain : A kind of plant with acrid leaves. See under 2d Plantain.

Example:


Taxonomy
Alisma, herb, rehmannia, Alisma plantago-aquatica, plant, water plantain, kidney, genus Alisma, Alisma gramineum, Alisma lanceolatum, Encyclopedia, the leaves, plant family, family Alismataceae, kidney infections, traditional Chinese medicine, China, body.

Defination from the web:
... Alisma is a genus of plants in the Alismataceae or water-plantain family. ...