Complex sentence: The word "Wiener" means "Viennese" in German; in Austria the term "Wiener" is uncommon for this food item, which instead is usually called Frankfurter Würstl.
Split into simpler sentences: The word "Wiener" means "Viennese" in German. In Austria the term "Wiener" is uncommon for this food item, which instead is usually called Frankfurter Würstl.