RIB n.
c vaulting, one of the primary members of the vault. These are strong arches, meeting and crossing one another, dividing the whole space into triangles, which are then filled by vaulted construction of lighter material. Hence, an imitation of one of these in wood, plaster, or the like.
RIVETING n.
n which the rivets, in two or more rows along the seam, are set one behind the other. -- Crossed riveting, riveting in which the rivets in one row are set opposite the spaces between the rivets in the next row. -- Double riveting, in lap riveting, two rows of rivets along the seam; in butt riveting, four rows, two on…
RUB v.
To hinder; to cross; to thwart. [R.] 'T is the duke's pleasure, Whose disposition, all the world well knows, Will not be rubbed nor stopped. Shak. To rub down. (a) To clean by rubbing; to comb or curry; as, to down a horse. (b) To reduce or remove by rubbing; as, to rub down the rough points. -- To rub off, to clean a…