flannelflower \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\noun 1.: mullein 2.: a Brazilian vine (Macrosiphonia longiflora) of the family Apocynaceae having woolly leaves 3.: an Australian plant (Actinotus helianthi) of the family Umbelliferae of which the umbels have a white velvety involucre — called also satinflower