D defs.my
Entry 1 sense Webster, 1913

Water lettuce

/wôt'-ẽr lĕt'-əs/ · Wa·ter let·tuce · IPA
01 A plant (Pistia stratiotes) which floats on tropical waters, and forms a rosette of spongy, wedge-shaped leaves.
  1. 1.
    A plant (Pistia stratiotes) which floats on tropical waters, and forms a rosette of spongy, wedge-shaped leaves.(Bot.)