water lettuce

2 definitions found

water lettuce - Collaborative International Dictionary of English v.0.48 :

  Water lettuce \Wa"ter let"tuce\ (Bot.)
     A plant (Pistia stratiotes) which floats on tropical
     waters, and forms a rosette of spongy, wedge-shaped leaves.
     --J. Smith (Dict. Econ. Plants).
     [1913 Webster]

water lettuce - WordNet (r) 2.1 (2005) :

  water lettuce
      n 1: pantropical floating plant forming a rosette of wedge-
           shaped leaves; a widespread weed in rivers and lakes [syn:
           pistia, water lettuce, water cabbage, Pistia stratiotes
           , Pistia stratoites]