razorback

definition: having a sharp narrow back
example:
speech part: adjective
synonyms: razor-backed
definition: any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin
example:
speech part: noun
synonyms: rorqual
definition: a mongrel hog with a thin body and long legs and a ridged back
example:
speech part: noun
synonyms: razorback hog

How razorback is being used?