A plaited, quilled, or goffered strip of lace, net, ribbon, or other material, used in place of collars or cuffs, and as a trimming for women's dresses and bonnets
Ruched curtains or garments are gathered so that they hang in soft folds. a ruched curtain or piece of clothing has parts of it gathered together so that it has folds in it (ruche , from rusca )