The term 'downy fibers' is a crossword solution for the word 'FUZZ' (4 letters). Downy fibers are the soft, fine fibers that make up the outer layer of some fabrics, such as velvet and chenille. They are usually made from natural materials like cotton, wool, or silk, and are often used to create a luxurious feel. The downy fibers also help to trap air, making the fabric more insulating and providing warmth.