n. & v.
n. 1 a lively dance of Bohemian origin in duple time. 2 the music for this.
v.intr. (polkas, polkaed or polka'd, polkaing) dance the polka. polka dot a round dot as one of many forming a regular pattern on a textile fabric etc.
[ F and G f. Czech pulka half-step f. pul half ]