This is the 7579th most frequent Polish word.
kętrzynie
"Kętrzynie" is the locative case form of "Kętrzyn," referring to being in or related to the town of Kętrzyn in Poland.
Here, 'Kętrzynie' is the locative case of 'Kętrzyn', used to indicate location.
Mieszkam w Kętrzynie od wielu lat.
I have lived in Kętrzyn for many years.
In this sentence, 'Kętrzynie' again indicates location, specifically where the meeting occurred.
Spotkałem go w Kętrzynie podczas wakacji.
I met him in Kętrzyn during vacation.
Here, 'Kętrzynie' once more marks the location, describing where the landmarks are situated.