\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.