This is the 5361st most frequent Polish word.
sportowa
"Sportowa" means "sports" or "sport-related" in English.
In this sentence, 'sportową' agrees with the feminine noun 'koszulkę' in the accusative case, indicating that the shirt is designed for sports.
Kupiłem sportową koszulkę na trening.
I bought a sports shirt for training.
Here, 'sportową' describes the feminine noun 'działalność' in the accusative case, specifying that the business is associated with sports.
Moja sąsiadka prowadzi sportową działalność gospodarczą.
My neighbor runs a sports-related business.
In this instance, 'sportowa' modifies the feminine noun 'torba' in the nominative case, explaining that the bag is intended for sporting activities.