moth mullein: European mullein with smooth leaves and large yellow or purplish flowers; naturalized as a weed in North America
mullein: any of various plants of the genus Verbascum having large usually woolly leaves and terminal spikes of yellow or white or purplish flowers
fast of esther: (Judaism) a minor fast day on Adar 13 commemorates three days that Esther fasted before approaching the Persian king on behalf of the Jewish people; the fast is connected with Purim