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.