A small sausage resembling a frankfurter, often served as an hors d'oeuvre.
(proper) A small sausage like a short, slim frankfurter, used esp. as an hors d'oeuvre.
Spicy but delicate Vienna sausages are eaten with various dishes such as sauerkraut or as a snack on itself, with or without relish.
American Heritage Dictionary of the English Language, 5th Edition
A purist rendering of wienerwurst, from German Wiener
'Viennese' (from Wien 'Vienna', from Latin Vienna) + Wurst