saw-edgen. a serrated edge (in quot. 1857 of a ridge of rock).
ΘΚΠ
the world > space > shape > unevenness > condition or fact of receding > condition or action of indentation of edge > [noun] > fine indentation of edge or serration > a serrated edge
saw-edge1857
1857 C. KingsleyTwo Years Ago xxi From the highest saw-edges, where Moel Meirch cuts the golden sky, down to the very depth of the abyss.