Home › Words › G › groundselgroundsel/ˈɡɹaʊnd.səl/groundsel means any of several widely-distributed plants, of the genus Senecio, having yellow, daisylike flowers.groundsel is pronounced /ˈɡɹaʊnd.səl/.EtymologyFrom Middle English grundeswülie, from Old English grundeswyliġe, grundeswelġe (“groundsel”), from grunde (“ground, bottom, abyss”) + swelge (“to swallow, to eat up”).nounAny of several widely-distributed plants, of the genus Senecio, having yellow, daisylike flowers.Definitions & examples from Wiktionary (CC BY-SA 3.0).