n. A fine filmy substance, consisting of cobweb formed by various small spiders, and only, according to some, when they are young.n. A variety of gauze, softer and stronger than the ordinary kind, much used for veils.n. Any thin or light material or fabric; also, a garment made of such material; specifically, a thin water-proof outer wrap, especially for women.n. A mere trifle; a flimsy, trivial matter.Thin and light as gossamer; light: as, a gossamer waterproof or coat.