The Collaborative International Dictionary of English v.0.48:
Mazourka \Ma*zour"ka\, Mazurka \Ma*zur"ka\, n. A Polish dance, or the music which accompanies it, usually in 3-4 or 3-8 measure, with a strong accent on the second beat. [1913 Webster]WordNet (r) 3.0 (2006):
mazurka n 1: music composed for dancing the mazurka 2: a Polish national dance in triple time