Definition of cantles:
(n) :
The raised back of a saddle.
(n) :
(Scotland) The top of the head.
(n) :
(Scotland) On many styles of sporran, a metal arc along the top of the pouch, usually fronting the clasp.
(n) :
(obsolete) A splinter, slice, or sliver broken off something.
(v) :
(obsolete, transitive) To cut into pieces.
(v) :
(obsolete, transitive) To cut out from.