The term DECORATIVE FEATHER can be summarized as a PLUME, which is a five-letter word. A PLUME is a type of feather that is often used for decorative purposes. Plumes are usually long and thin, and they come in a variety of colors. They are often used to adorn hats, clothing, and other items. Plumes are also used in traditional ceremonies and rituals, and they are sometimes used to symbolize power and status.