Source : Webster's Revised Unabridged Dictionary (1913)

Milky \Milk"y\, a.
   1. Consisting of, or containing, milk.

            Pails high foaming with a milky flood. --Pope.

   2. Like, or somewhat like, milk; whitish and turbid; as, the
      water is milky. ``Milky juice.'' --Arbuthnot.

   3. Yielding milk. ``Milky mothers.'' --Roscommon.

   4. Mild; tame; spiritless.

            Has friendship such a faint and milky heart? --Shak.

   {Milky Way}. (Astron.) See {Galaxy}, 1.

Source : WordNet®

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