From The Collaborative International Dictionary of English v.0.48 [gcide]:
Dixieland \Dixieland\ n.
the 11 southern states that seceded from the U. S. in 1861.
Syn: Confederacy, Confederate States of America, South,
Dixie.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) [wn]:
Dixieland
n 1: the southern states that seceded from the United States in
1861 [syn: Confederacy, Confederate States,
Confederate States of America, South, Dixie,
Dixieland]