"Villous" refers to a surface that is covered with soft, hair-like projections called villi. These structures increase the surface area, which can enhance absorption and secretion processes in various biological systems. Villi are commonly found in the lining of the small intestine, where they play a crucial role in nutrient absorption. In addition to biological contexts, "villous" can also describe certain textures in materials or fabrics that have a fuzzy or hairy appearance. This term is often used in textiles to indicate a soft, plush surface, similar to that of velvet or fleece.