noun
- any composite plant of the genus Senecio, especially S. vulgaris, a common weed having clusters of small yellow disk flowers without rays.
noun
noun
- 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