The term 'FIXED A CHAIR SEAT' can be summarized by the crossword solution 'CANED', which refers to the process of weaving a cane material into a chair seat. This is done by weaving the cane material through the holes in the chair frame, creating a strong and durable seat. Cane is a natural material that is often used in furniture making due to its strength and durability. It is also a popular choice for chair seats because it is lightweight and comfortable.