The Collaborative International Dictionary of English v.0.48:

Sultana \Sul*ta"na\, n. [It.]
   1. The wife of a sultan; a sultaness.
      [1913 Webster]

   2. pl. A kind of seedless raisin produced near Smyrna in
      Asiatic Turkey.
      [1913 Webster]

   Sultana bird (Zool.), the hyacinthine, or purple,
      gallinule. See Illust. under Gallinule.
      [1913 Webster]

WordNet (r) 3.0 (2006):

sultana
    n 1: pale yellow seedless grape used for raisins and wine
    2: dried seedless grape [syn: seedless raisin, sultana]