Floss is a type of THREAD made from untwisted silk fibers. It is commonly used in embroidery and other needlework, as well as in dental hygiene. The term 'FLOSS' is derived from the German word 'flosse, ' which means 'THREAD.' FLOSS is composed of multiple strands of silk fibers that are twisted together to form a single strand. The fibers are usually very fine and can be difficult to work with, but they are strong and durable.