duckweed: Meaning and Definition of

duck•weed

Pronunciation: (duk'wēd"), [key]
— n.
  1. any plant of the family Lemnaceae, esp. of the genus Lemna, comprising small aquatic plants that float free on still water.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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