S: (n) rib, costa (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))
S: (n) rib (cut of meat including one or more ribs)
S: (n) rib (a riblike supporting or strengthening part of an animal or plant)
S: (n) rib (a projecting molding on the underside of a vault or ceiling; may be ornamental or structural)
Verb
S: (v) rib (form vertical ribs by knitting) "A ribbed sweater"
S: (v) ridicule, roast, guy, blackguard, laugh at, jest at, rib, make fun, poke fun (subject to laughter or ridicule) "The satirists ridiculed the plans for a new opera house"; "The students poked fun at the inexperienced teacher"; "His former students roasted the professor at his 60th birthday"