Nettlewort; a genus of the polygamia aquatilis order, belonging to the syngenesia class of plants. There are four species, which grow commonly as weeds by the sides of ditches. The young leaves of the common kind, called dock-roses, have the taste of radishes, and are eaten raw at Constantinople as a salad. In some parts of England the common people boil them as greens, but they have a bitter and disagreeable taste.