\Mill"ing\, n.
The act or employment of grinding or passing through a mill;
the process of fulling; the process of making a raised or
intented edge upon coin, etc.; the process of dressing
surfaces of various shapes with rotary cutters. See {Mill}.
{High milling}, milling in which grain is reduced to flour by
   a succession of crackings, or of slight and partial
   crushings, alternately with sifting and sorting the
   product.
{Low milling}, milling in which the reduction is effected in
   a single crushing or grinding.
{Milling cutter}, a fluted, sharp-edged rotary cutter for
   dressing surfaces, as of metal, of various shapes.
{Milling machine}, a machine tool for dressing surfaces by
   rotary cutters.
{Milling tool}, a roller with indented edge or surface, for
   producing like indentations in metal by rolling pressure,
   as in turning; a knurling tool; a milling cutter.