This is the 11467th most frequent Polish word.
jarmarków
"Jarmarków" is the genitive plural form of "jarmark," meaning "fairs" (as in outdoor markets or trade fairs).
The word "jarmarków" is used here as the genitive plural form of "jarmark" (fair), indicating that the speaker visited fairs.
W weekend odwiedziłem kilka lokalnych jarmarków.
Over the weekend, I visited several local fairs.
"Jarmarków" is in the genitive plural form, specifying the fairs taking place in the city.
Podczas jarmarków w mieście można znaleźć ciekawe rękodzieło.
During the fairs in the city, one can find interesting handicrafts.
The genitive plural form "jarmarków" appears to describe where the sellers were offering their goods.