11D Process of removal e_i_i_ation.
If 16A can only be station, then the first i in 11D means the word can't be eradication.
Any ideas, it's the last clue for me?...
8A Roman Landmark - ??l?s?e?? 8D Winsome - ??t? 12D Twenty - ninth of September - ??c?a???a? Day 21A Benevolent attendant - ?i?i?t?r?n? A?g?? 41D Member of an order of Friars - D???n?c?? 53A...