‖n. [ From Genappe, in Belgium. ] A worsted yarn or cord of peculiar smoothness, used in the manufacture of braid, fringe, etc. Simmonds. [ 1913 Webster ]
n. [ F. nappe cloth, sheet. See Napery. ] (Geom.) Sheet; surface; all that portion of a surface that is continuous in such a way that it is possible to pass from any one point of the portion to any other point of the portion without leaving the surface. Thus, some hyperboloids have one