This is the 6165th most frequent Polish word.
austriaczką
"Austriaczką" means "an Austrian woman" in English.
Used as a predicate noun describing someone's nationality and gender.
Ona jest Austriaczką.
She is an Austrian woman.
Used as a direct object in the instrumental case to denote interaction with someone.
Rozmawiam z Austriaczką.
I am talking to an Austrian woman.
Used as a direct object in the accusative case to specify who is being seen.