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[ground-suh l] /ˈgraʊnd səl/
any composite plant of the genus Senecio, especially S. vulgaris, a common weed having clusters of small yellow disk flowers without rays.
before 900; Middle English grundeswili(e), groundeswel, Old English grundeswelge, gundeswelge; compare Old English gund pus, swelgan to swallow, absorb (from its use in medicine); the -r- is by folk etymology from association with ground1


[ground-suh l] /ˈgraʊnd səl/
noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for groundsel


any of certain plants of the genus Senecio, esp S. vulgaris, a Eurasian weed with heads of small yellow flowers: family Asteraceae (composites) See also ragwort
groundsel tree, a shrub, Baccharis halimifolia, of E North America, with white plumelike fruits: family Asteraceae
Word Origin
Old English grundeswelge, changed from gundeswilge, from gund pus + swelgan to swallow; after its use in poultices on abscesses
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for groundsel

any of about 1,200 species of annual, biennial, and perennial herbs, shrubs, trees, and climbers constituting the genus Senecio of the family Asteraceae, distributed throughout the world. Some species are cultivated as border plants or houseplants, and many species contain alkaloids that are poisonous to grazing animals

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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