ra•zor•backPronunciation: (rā'zur-bak"), [key]
a finback or rorqual.
a wild or semiwild hog with a ridgelike back, common in the southern U.S.
a sharp narrow ridge or range of hills.
having a sharp ridge along the back.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.