1. (informal) slang terms for a paunch
  2. an enlarged and muscular saclike organ of the alimentary canal; the principal organ of digestion


Tummy: 1. Babytalk for the stomach. The word tummy is derived from stomach. 2. Slang for a paunch. A big tummy raises the risk of diabetes.
Found on http://www.medterms.com/script/main/art.asp?articlekey=26125
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