The Collaborative International Dictionary of English v.0.48:

Sausage \Sau"sage\ (?; 48), n. [F. saucisse, LL. salcitia,
   salsicia, fr. salsa. See Sauce.]
   1. An article of food consisting of meat (esp. pork) minced
      and highly seasoned, and inclosed in a cylindrical case or
      skin usually made of the prepared intestine of some
      animal.
      [1913 Webster]

   2. A saucisson. See Saucisson. --Wilhelm.
      [1913 Webster]

WordNet (r) 3.0 (2006):

sausage
    n 1: highly seasoned minced meat stuffed in casings
    2: a small nonrigid airship used for observation or as a barrage
       balloon [syn: blimp, sausage balloon, sausage]

Moby Thesaurus II by Grady Ward, 1.0:

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