Once upon a time there was a competition for the German word with the longest uninterrupted succession of consonants. The winning word, composed of a word coming from the Russian language and an Austrian word, was

Borschtschgschnas.
(short interruption for cleaning the screen from the spit that came from my attempt to actually pronounce the word)

But then, Germans also can compose the word

Ioaue

which means a wet meadow on a Jupiter moon.

Wolfgang