The term 'Cotton Thread' can be broken down into two crossword solutions: Lisle (5 letters) and Fiber (5 letters). Lisle is a type of cotton thread that is tightly twisted and has a very smooth finish. It is often used in making fine fabrics such as lingerie, stockings, and gloves. Fiber is a general term for the thin strands of material that make up a fabric. Cotton is a natural fiber that is made from the seed hairs of the cotton plant. Cotton thread is a strong and durable thread that is commonly used in sewing and embroidery.