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

milky \milk"y\, a.
   1. consisting of, or containing, milk.
      1913 webster

            pails high foaming with a milky flood. --pope.
      1913 webster

   2. like, or somewhat like, milk; whitish and turbid; as, the
      water is milky. "milky juice." --arbuthnot.
      1913 webster

   3. yielding milk. "milky mothers." --roscommon.
      1913 webster

   4. mild; tame; spiritless.
      1913 webster

            has friendship such a faint and milky heart? --shak.
      1913 webster

   milky way. astron. see galaxy, 1.
      1913 webster
see also:
milky way galaxy 

[2] : WordNet (r) 2.0

milky
     adj : resembling milk in color or cloudiness; not clear; "milky
           glass" syn: milklike, whitish
     also: milkiest, milkier
see also:
milklike whitish milkiest milkier 

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

48 moby thesaurus words for "milky":
   argent, argentine, bland, canescent, chalky, changeable,
   cretaceous, fleecy-white, frosted, frosty, grizzled, grizzly,
   halfhearted, hoar, hoary, indecisive, infirm of purpose,
   infirm of will, insipid, irresolute, lacteal, lacteous, lactescent,
   lactic, lactiferous, lily-white, marble, marmoreal, milch, milk,
   milk-and-water, mushy, neutral, niveous, platinum, pure white,
   silver, silvered, silvery, snow-white, snowy, swan-white,
   tasteless, vapid, watery, white, white as snow, wishy-washy

Milky >> M Words
Milky, definition of term: Milky
milky_pag1.html

Milky Way >> M Words
Milky Way, definition of term: Milky Way
milky+way_pag1.html

Milky Way Galax >> M Words
Milky Way Galax, definition of term: Milky Way Galax
milky+way+galax_pag1.html