mazurka (n.) Look up mazurka at Dictionary.com
lively dance, also mazourka, 1818, from Russian mazurka, from Polish mazurek "dance of the Mazur," a reference to inhabitants of Mazowsze (Medieval Latin Mazovia), ancient region in central Poland. The Polish accusative in tańczyć mazurka "to dance the mazurek" was interpreted in Russian as a feminine affix, hence the -ka ending.