(grow´grain) Grosgrain is a tightly woven, firm, warp-faced fabric with heavy, round filling ribs created by a high-warp count and coarse filling yarns. Grosgrain can be woven as a narrow-ribbon or a fullwidth fabric.
A cloth of about 180 g/sq. metre in which the rounded rib runs in the weft direction and is more pronounced than that in a taffeta or poult. The warp consists of closely woven continuous filament yarns. Rather coarse yarn is used in the weft.