Lübeck Syllabification: (Lü·beck)Pronunciation: /ˈlo͞oˌbek, ˈlY-/Definition of Lübeck a port in northern Germany, on the Baltic coast in Schleswig-Holstein, northeast of Hamburg; population 211,200 (est. 2006). Between the 14th and 19th centuries it was an important city within the Hanseatic League. Lübeck in other Oxford dictionaries Definition of Lübeck in the British & World English dictionary