The Collaborative International Dictionary of English v.0.48:

Bologna \Bo*lo"gna\, n.
   1. A city of Italy which has given its name to various
      objects.
      [1913 Webster]

   2. A Bologna sausage; also informally called baloney.
      [1913 Webster]

   Bologna sausage [It. salsiccia di Bologna], a large sausage
      made of bacon or ham, beef, veal, and pork, cooked and
      smoked, chopped fine and inclosed in a skin.

   Bologna stone (Min.), radiated barite, or barium sulphate,
      found in roundish masses composed of radiating fibers,
      first discovered near Bologna. It is phosphorescent when
      calcined.

   Bologna vial, a vial of unannealed glass which will fly
      into pieces when its surface is scratched by a hard body,
      as by dropping into it a fragment of flint; whereas a
      bullet may be dropped into it without injury.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Bologna
    n 1: the capital of Emilia-Romagna; located in northern Italy to
         the east of the Apennines
    2: large smooth-textured smoked sausage of beef and veal and
       pork [syn: bologna, Bologna sausage]

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "bologna":
   Vienna sausage, bangers, black pudding, blood pudding,
   braunschweiger, frank, frankfurter, gooseliver, headcheese,
   hot dog, knockwurst, liver sausage, liverwurst, salami, saucisse,
   sausage, weenie, wiener, wienerwurst, wienie