Pronunciation: (nī'lon),[key] —n. 1. any of a class of thermoplastic polyamides capable of extrusion when molten into fibers, sheets, etc., of extreme toughness, strength, and elasticity, synthesized by the interaction of a dicarboxylic acid with a diamine: used esp. for yarn, fabrics, and bristles, as for brushes.
2. nylons,stockings made of nylon, esp. sheer, full-length ones for women.