Definition of pillwort

: a water fern of the genus Pilularia especially : a widely but locally distributed European plant (P. globulifera) occurring chiefly about the margins of bodies of water or in wet acid soil

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History and Etymology for pillwort

pill entry 4 + wort; from its small globose sporocarps

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Cite this Entry

“Pillwort.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/pillwort. Accessed 12 December 2019.

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