This is the 11665th most frequent Polish word.
kolarza
Cyclist.
The word 'kolarz' is used here as a masculine noun in the nominative case to describe a cyclist.
Kolarz wygrał wyścig.
The cyclist won the race.
The word 'kolarza' is in the genitive case, used to express possession or relation.
Podziwiam technikę kolarza.
I admire the cyclist's technique.
The word 'kolarzem' is in the instrumental case, indicating the means by or with whom an action is performed.