This is the 6096th most frequent German word.
czernohorszky
The word "czernohorszky" is not German; it appears to be a surname of Slavic origin. It does not have a specific definition in English.
Here, 'Czernohorszky' is used as the name of a company, denoting its business identity.
Die Firma Czernohorszky ist in Wien ansässig.
The Czernohorszky company is based in Vienna.
In this instance, 'Czernohorszky' indicates the author of the mentioned book.
Hast du das Buch von Czernohorszky gelesen?
Have you read the book by Czernohorszky?
In this sentence, the term 'Czernohorszky' is used as a proper noun, specifically a last name, of a person who presented.