The term 'PREPARED FOR FEATHERS' can be solved by the crossword solution 'TARRED', which is a 6-letter word. Tarring is a process of coating a surface with tar, a thick, dark liquid made from coal, wood, or petroleum. It is often used to waterproof and protect surfaces, such as roofs, from the elements. In this context, it is likely that the tarring process was used to prepare a surface for feathers, such as for a bedding or cushion.