What is the term for the horizontal fibers woven into fabric, also known as weft or woof?

The term for the horizontal fibers woven into fabric is known as "filling." In the context of fabric construction, filling refers specifically to the yarns that run across the width of the fabric, contrasting with warp yarns, which run lengthwise. Filling is essential in defining the overall texture and characteristics of the fabric, as it contributes to the fabric's durability, flexibility, and appearance.

Understanding this term is crucial in textiles and apparel marketing since it plays a significant role in how fabrics are manufactured and utilized in various garments and accessories. The specific arrangement and quality of both the filling and warp fibers can affect the final product's use, feel, and aesthetic appeal. This foundational knowledge can be vital when discussing fabric choices in marketing contexts, as it directly relates to product quality and consumer preferences.