MULLEIN Meaning of MULLEIN in English [ 'mʌlɪn ]■ noun a plant with woolly leaves and tall spikes of yellow flowers. [ Verbascum thapsus ( great ~ ) and related species.]OriginME: from OFr. moleine , of Celtic origin. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004