The Collaborative International Dictionary of English v.0.48:

Dixie \Dix"ie\ (d[i^]ks"[y^]), prop. n.
   1. A colloquial name for the Southern portion of the United
      States, esp. during the Civil War. [U.S.]

   Syn: Dixieland, Dixie Land, the Confederacy, Confederate
        States of America, the South.

   Syn: . [1913 Webster]

   2. a song popular in the Confederate states during the
      American Civil War, and still played as a nostalgic anthem
      by those patriotic to the American south. It was written
      by Daniel D. Emmett in 1859.
      [PJC]

   whistle Dixie to talk unrealistically; to engage in
      unrealistic or overoptimistic fantasies; as, that ain't
      just whistlin' Dixie.
      [PJC]

WordNet (r) 3.0 (2006):

Dixie
    n 1: the southern states that seceded from the United States in
         1861 [syn: Confederacy, Confederate States,
         Confederate States of America, South, Dixie,
         Dixieland]
    2: a large metal pot (12 gallon camp kettle) for cooking; used
       in military camps

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "Dixie":
   Dixieland, Down East, East, East Coast, Middle Atlantic,
   Middle West, New England, North, North Central region, Northeast,
   Northwest, Pacific Northwest, South, Southeast, Southwest, Sunbelt,
   West, West Coast, Yankeeland, eastland, northland, the Coast,
   westland, wild West



U.S. Gazetteer Counties (2000):

Dixie -- U.S. County in Florida
   Population (2000):    13827
   Housing Units (2000): 7362
   Land area (2000):     704.014931 sq. miles (1823.390223 sq. km)
   Water area (2000):    159.646349 sq. miles (413.482127 sq. km)
   Total area (2000):    863.661280 sq. miles (2236.872350 sq. km)
   Located within:       Florida (FL), FIPS 12
   Location:             29.607261 N, 83.119978 W
   Headwords:
    Dixie
    Dixie, FL
    Dixie County
    Dixie County, FL


U.S. Gazetteer Places (2000):

Dixie, WA -- U.S. Census Designated Place in Washington
   Population (2000):    220
   Housing Units (2000): 87
   Land area (2000):     0.513788 sq. miles (1.330706 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.513788 sq. miles (1.330706 sq. km)
   FIPS code:            18055
   Located within:       Washington (WA), FIPS 53
   Location:             46.140782 N, 118.153897 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Dixie, WA
    Dixie