The Collaborative International Dictionary of English v.0.48:

Milled \Milled\ (m[i^]ld), a.
   1. Having been subjected to some process of milling.
      [1913 Webster]

   2. Specifically: Having multiple fine grooves on the rim, in
      the direction from obverse to reverse; -- of coins. Coins
      of silver and gold were milled to make it impossible for
      uncrupulous persons to shave small pieces from the edge
      without detection.
      [PJC]

   Milled cloth, cloth that has been beaten in a fulling mill.


   Milled lead, lead rolled into sheets.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Mill \Mill\ (m[i^]l), v. t. [imp. & p. p. Milled (m[i^]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]

WordNet (r) 3.0 (2006):

milled
    adj 1: (of grains especially rice) having the husk or outer
           layers removed; "polished rice" [syn: milled,
           polished]

Moby Thesaurus II by Grady Ward, 1.0:

81 Moby Thesaurus words for "milled":
   assembled, branny, built, cast, chalklike, chalky, comminute,
   comminuted, constructed, crafted, created, crushed, custom,
   custom-built, custom-made, detrital, detrited, disintegrated,
   dusty, efflorescent, extracted, fabricated, farinaceous, fashioned,
   fine, flaky, floury, forged, formed, furfuraceous, gathered,
   gone to dust, grated, ground, grown, handcrafted, handmade,
   harvested, homemade, homespun, impalpable, levigated, machine-made,
   machined, made, made to order, man-made, manufactured, mealy,
   mined, molded, pestled, powdered, powdery, prefab, prefabricated,
   processed, pulverant, pulverized, pulverulent, put together,
   raised, ready-for-wear, ready-formed, ready-made, ready-prepared,
   ready-to-wear, reduced to powder, refined, scaly, scobicular,
   scobiform, scurfy, shaped, sharded, shredded, smelted, triturated,
   well-built, well-constructed, well-made