This is the 3935th most frequent Polish word.
starym
"Starym" is the instrumental or locative singular form of "stary," meaning "old."
Instrumental case to describe the means of transport.
Idę do szkoły starym samochodem.
I go to school in an old car.
Locative case to describe the location.
Mieszka w starym domu.
He lives in an old house.
Instrumental case to specify accompaniment.