noun
1. : any of several plants having ashy-gray or white tomentose leaves: as
a. : a stiff perennial ( Senecio cineraria ) with very white woolly pinnatifid leaves
b. : snow-in-summer a
c. : mullein pink
d. : either of two plants of the genus Centaurea ( C. cineraria and C. gymnocarpa ) with white tomentose foliage
e. : beach wormwood
2. : miller 2a