ragwort

UK: /ˈræɡˌwɜːt/ US: (rag′wûrt′, -wôrt′)

WordReference Random House Unabridged Dictionary of American English © 2025

rag•wort  (rag′wûrt′, -wôrt′), n. 

1. Plant Biology any of various composite plants of the genus Senecio, as S. jacobaea, of the Old World, having yellow flowers and irregularly lobed leaves, or S. aureus (golden ragwort,) of North America, also having yellow flowers.

• 1325–75; Middle English; see rag¹, wort²

Collins Concise English Dictionary © HarperCollins Publishers::

ragwort / ˈræɡˌwɜːt/ noun

1. any of several plants of the genus Senecio, esp S. jacobaea of Europe, that have yellow daisy-like flowers: family Asteraceae (composites)
   See also groundsel1