Ruche (?), n. [F. ruche ruche, beehive, OF. rusche a beehive, which was formerly made of the bark of trees; cf. W. rhisg, rhisgl, bark, gael. rusg bark, rind.] 1. 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. [Written also rouche.]

2. A pile of arched tiles, used to catch and retain oyster spawn.