This is the 4565th most frequent Polish word.
litewskim
"Litewskim" means "Lithuanian" (adjective, describing something related to Lithuania).
Adjective describing the city Wilno being Lithuanian.
Mój przyjaciel mieszka w litewskim mieście Wilno.
My friend lives in the Lithuanian city of Vilnius.
Adjective describing the king Mendog being Lithuanian.
Czy czytałeś książkę o litewskim królu Mendogu?
Have you read the book about the Lithuanian king Mindaugas?
Adjective describing the athletes being Lithuanian.