Definition of "Rib" :

noun: support resembling the rib of an animal

noun: a projecting molding on the underside of a vault or ceiling; may be ornamental or structural

noun: a riblike supporting or strengthening part of an animal or plant

noun: any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates)

noun: a teasing remark

noun: cut of meat including one or more ribs

verb: subject to laughter or ridicule

verb: form vertical ribs by knitting

"A ribbed sweater."