Sentence:  Towards nine the three miners said that as they had brought their instruments they might as well tune up, for the boys and girls would soon be arriving now, and hungry for a good old fashioned <WSD>breakdown</WSD>. A fiddle, a banjo, and a clarinet - these were the instruments. 
Meaning of the word marked with <WSD> tags:  Any rapid bluegrass dance tune, especially featuring a five-string banjo.