Cotillion
The cotillion is a type of patterned social dance that originated in France in the 18th century. It was originally made up of four couples in a square formation, the forerunner of the quadrille; in the United States the square dance, where the "figures" are called aloud by the caller, is a form of rural contredanse that also descended from the urban cotillion. Its name, from French cotillon, "petticoat", reflected the flash of petticoats as the changing partners turned. The cotillion, of repeated "figures" interspersed with "changes" of different figures to different music, was one of many contredanses where the gathered participants were able to introduce themselves and to flirt with other dancers through the exchange of partners within the formation network of the dance. By the 19th century, the cotillion evolved to include more couples with many complex dance figures.
Read more about Cotillion.