This is the 11227th most frequent German word.
siebeck
The word "siebeck" does not have a meaning in German; it appears to be a proper noun, such as a surname.
In this sentence, 'siebeck' is used as a proper noun to refer to a specific café.
Frederike besuchte das Siebeck-Café am Wochenende.
Frederike visited the Siebeck café on the weekend.
Here, 'siebeck' is a family name referring to the author Julia Siebeck.
Ben las einen Artikel der bekannten Autorin Julia Siebeck.
Ben read an article by the famous author Julia Siebeck.
In this example, 'siebeck' is used as a brand name, representing a company or product line.