This is the 7862nd most frequent Polish word.
mieszkała
"Mieszkała" means "she lived" in English.
The verb 'mieszkała' indicates that Anna's residence in Kraków occurred in the past and is no longer ongoing.
Anna mieszkała w Krakowie przez pięć lat.
Anna lived in Kraków for five years.
Here, 'mieszkała' conveys that Marta's living situation with her family in the big house was a past state.
Marta mieszkała z rodziną w dużym domu.
Marta used to live with her family in a big house.
In this sentence, 'mieszkała' describes a location of residence that was true in the past but changed with her relocation.