This is the 9139th most frequent Polish word.
szefów
The Polish word "szefów" means "bosses'" (genitive plural form of "szef").
Here, 'szefów' is used in the genitive plural form to indicate possession or membership of multiple bosses within the organization.
W firmie mamy dwóch szefów.
In the company, we have two bosses.
In this case, 'szefów' is in the genitive plural form, used to indicate 'of the bosses' when specifying 'one' among them.
Rozmawiałem wczoraj z jednym ze szefów.
Yesterday, I spoke with one of the bosses.
Here, 'szefów' is used in the acquisitive plural form to indicate direct action upon multiple bosses, specifically stating lack of acquaintance with them.