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duckweed

American  
[duhk-weed] / ˈdʌkˌwid /

noun

  1. any plant of the family Lemnaceae, especially of the genus Lemna, comprising small aquatic plants that float free on still water.

duckweed British  
/ ˈdʌkˌwiːd /

noun

  1. any of various small stemless aquatic plants of the family Lemnaceae, esp any of the genus Lemna, that have rounded leaves and occur floating on still water in temperate regions

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of duckweed

1400–50; late Middle English dockewede; so called because eaten by ducks

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.