My 11a is now looking dubious??
Thing every elder has about yellow waistcoat - only defo letter is O . I have ?O???? - went with lorica but can't parse it apart from the or=yellow?
For 11A, I have 'bolero' - waistcoat. I think it's 'bole' which every tree ('every elder') has, with 'or'/yellow (and it's 'about' so reversed in the answer - bole ro).