[1] : The Collaborative International Dictionary of English v.0.48

milling \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.
   1913 webster

   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.
      1913 webster
see also:
mill high milling low milling milling cutter milling machine milling tool 

[2] : The Collaborative International Dictionary of English v.0.48

mill \mill\ mi^l, v. t. imp.  p. p. milled mi^ld; p.
   pr.  vb. n. milling. see mill, n., and cf. muller.
   1913 webster
   1. to reduce to fine particles, or to small pieces, in a
      mill; to grind; to comminute.
      1913 webster

   2. to shape, finish, or transform by passing through a
      machine; specifically, to shape or dress, as metal, by
      means of a rotary cutter.
      1913 webster

   3. to make a raised border around the edges of, or to cut
      fine grooves or indentations across the edges of, as of a
      coin, or a screw head; also, to stamp in a coining press;
      to coin.
      1913 webster

   4. to pass through a fulling mill; to full, as cloth.
      1913 webster

   5. to beat with the fists. cant --thackeray.
      1913 webster

   6. to roll into bars, as steel.
      1913 webster

   to mill chocolate, to make it frothy, as by churning.
      1913 webster
see also:
milled milling mill muller to mill chocolate 

[3] : WordNet (r) 2.0

milling
     n : corrugated edge of a coin

[4] : Moby Thesaurus II by Grady Ward, 1.0

40 moby thesaurus words for "milling":
   architecture, assembly, building, casting, composition,
   construction, conversion, crafting, craftsmanship, creation,
   cultivation, devising, elaboration, erection, extraction,
   fabrication, fashioning, formation, forming, formulation, framing,
   growing, handicraft, handiwork, harvesting, machining, making,
   manufacture, manufacturing, mining, molding, prefabrication,
   preparation, processing, producing, raising, refining, shaping,
   smelting, workmanship

Milling >> M Words
Milling, definition of term: Milling
milling_pag1.html