DCHP-1 Online
blue belly [Edit etymology] Slang, Obs. 
a Yankee, an American.
- 1827 (1832) In short "blue bellies" of all sorts and conditions, equal to any of the frontier towns on both sides of the "lines."
- 1827 (1832) In short "blue bellies" of all sorts and conditions, equal to any of the frontier towns on both sides of the "lines."