The Collaborative International Dictionary of English v.0.48:

Unappropriated \Un`ap*pro"pri*a`ted\, a. [Pref. un- not +
   appropriated.]
   1. Not specially appropriate; having no special application.
      --J. Warton.
      [1913 Webster]

   2. Not granted to any person, corporation, or the like, to
      the exclusion of others; as, unappropriated lands.
      [1913 Webster]

   3. Not granted for, or applied to, any specific purpose; as,
      the unappropriated moneys in the treasury.
      [1913 Webster]

   Note: In the proceedings of the United States congress, money
         for specific purposes must first be authorized by law,
         and must subsequently be appropriated in a separate
         action. Money authorized but not appropriated may be
         described as unappropriated.
         [PJC]