This is the 7859th most frequent Polish word.
mierzejewski
"Mierzejewski" is a Polish surname and does not have a standalone definition in English.
Here, 'Mierzejewski' is used as a surname of a male individual in Polish.
Pan Mierzejewski pracuje jako nauczyciel historii.
Mr. Mierzejewski works as a history teacher.
In this sentence, 'Mierzejewski' refers directly as an informal reference to the person using his last name.
Rozmawiałem z Mierzejewskim na temat projektu.
I talked with Mierzejewski about the project.
Here, 'Mierzejewskich' represents the plural possessive form of the name, indicating a family association.