Meaning of razorback

(adj) having a sharp narrow back; "a razor-backed horse"; "razorback hogs"

(noun) a mongrel hog with a thin body and long legs and a ridged back; a wild or semi-wild descendant of improved breeds; found chiefly in the southeastern United States

any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin