This is the 6092nd most frequent Polish word.
andersa
"Andersa" refers to General Władysław Anders Street or something related to General Władysław Anders in Poland.
Andersa refers to the Polish name Anders, used in the genitive case to indicate the object of the book.
Czytałem książkę na temat Andersa.
I was reading a book about Anders.
Andersa refers to the street named after a person called Anders, showing possession in the genitive case.
Znajomy mieszka na ulicy Andersa.
A friend lives on Anders Street.
Andersa is used here to specify the point of departure, a station or location named Anders, using an appropriate grammatical case.