Water grass.
(a)
A tall march perennial grass (Paspalum dilatatum) of the southern United States and the American tropics.
(b)
Manna grass.
(c)
The grass Chloris elegans.
(d) [Dial. Eng.]
(1)
Velvet grass.
(2)
The water cress.
(3)
One of various horsetails.
© Webster 1913