The Collaborative International Dictionary of English v.0.48:
Quickstep \Quick"step`\, n. (Mus.) A lively, spirited march; also, a lively style of dancing. [1913 Webster]WordNet (r) 3.0 (2006):
quickstep n 1: military march accompanying quick time 2: a ballroom dance with both quick and slow steps v 1: perform a quickstep