groundsel

 
Pronunciation: /ˈgraʊn(d)s(ə)l/

noun

  • a widely distributed plant of the daisy family, with yellow rayless flowers.
    • Genus Senecio, family Compositae: several species, in particular the common groundsel (S. vulgaris), which is a common weed

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 ground1, and refer to the plant's rapid growth