/ ˈgraʊnsl; NAmE / noun
[ U ] a wild plant with yellow flowers, sometimes used as food for animals and birds
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WORD ORIGIN
Old English gundæswelgiæ (later grundeswylige ), probably from gund pus + swelgan to swallow (with reference to its use in poultices). The later form may be by association with ground , and refer to the plant's rapid growth.