This is the 14962nd most frequent Polish word.
rowerow
"Rowerów" means "bicycles" in English (genitive plural form).
Here, 'rowerow' appears to mistakenly be used in place of 'rowery', which is the correct nominative plural form of 'rower' meaning bicycles.
Mam dwa rowerow w domu.
I have two bicycles at home.
The word 'rowerów' here is correctly used in genitive plural form, indicating possession or quantity.
Potrzebuję rowerów na wycieczkę.
I need bicycles for a trip.
In this sentence, 'rowerów' is used in genitive plural to show possession, specifying it as a part of the bicycles.