This is the 12261st most frequent Polish word.
mieszkanocw
It seems there might be a typo in your word "mieszkanocw." Perhaps you meant "mieszkaniec"? If so, it means "inhabitant" or "resident" in English. Let me know if you need clarification!
Here, 'mieszkaniec' refers to someone residing in Warsaw, utilized as a noun to identify a resident.
Mieszkaniec Warszawy codziennie jeździ do pracy metrem.
A resident of Warsaw travels to work by subway every day.
In this sentence, 'mieszkanka' is used to specifically denote a female inhabitant or resident.
Mieszkanka Krakowa uwielbia spacerować po Starym Mieście.
A female resident of Krakow loves walking around the Old Town.
The word 'mieszkanką' is the instrumental case of 'mieszkanka,' providing context to her status as a resident in the city.