The term FABRIC MATERIAL can be broken down into two crossword solutions: FIBER (5 letters). Fiber is a material that is composed of many small threads or filaments that are twisted together to form a larger strand. It is used in the production of fabrics, carpets, and other textiles. Fibers can be natural, such as cotton, wool, and silk, or synthetic, such as nylon and polyester. Natural fibers are derived from plants and animals, while synthetic fibers are created from chemical processes.