This is the 11573rd most frequent German word.
stirnemann
The term "Stirnemann" is not a standard German word and does not have a definition in typical usage. It may be a proper noun, such as a surname.
Here, 'Stirnemann' is used as a proper noun, possibly a surname, indicating an individual's name.
Der Stirnemann dachte über eine neue Erfindung nach.
The Stirnemann thought about a new invention.
In this instance, 'Stirnemann' refers again to a proper noun, likely associated with a person whose work is the topic of discussion.
Die Schüler diskutierten über die Arbeit von Stirnemann im Unterricht.
The students discussed Stirnemann's work in class.
This time, 'Stirnemann' is used possessively, indicating ownership of the book by someone named Stirnemann.