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water lettuce

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noun
  1. a floating aquatic plant, Pistia stratiotes, of the arum family, having a rosette of thick, spongy leaves.
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Origin of water lettuce

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for water lettuce

Historical Examples

  • Like the lake, it has great patches of water-lettuce, which in some places almost bridge the channel.

    With the World's Great Travellers, Volume 1

    Various

  • This is principally formed of the water-lettuce, or Pistia, an aquatic plant with long roots which descend to the bottom.