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(Plants) a small Eurasian water fern, Pilularia globulifera, with globular spore-producing bodies and grasslike leaves
[C19: from pill1 + wort]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||pillwort - European water fern found around margins of bodies of water or in wet acid soil having small globose sporocarps|
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