Masurian
/məˈz(j)ʊərɪən/(also Mazurian)
adjective
Of or relating to Masuria, a low-lying forested region of north-east Poland (formerly part of East Prussia) containing numerous glacial lakes. Chiefly in Masurian Lakes.
noun
An inhabitant of Masuria.
Origin
Early 20th century; earliest use found in The Times. Either from the name of Masuria + -an, or directly from German Masur- (in Masuren) + -ian, after German Masurisch.