Yes, RAZORBACKS is a Scrabble word!

Letter values in Scrabble US: R 1, A 1, Z 10, O 1, R 1, B 3, A 1, C 3, K 5, S 1.

Is it a valid word?

RAZORBACKS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

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

Also: razorback hog, razorbacked hog.