9 letters · 11 points in Scrabble
noun a ball at which young ladies are presented to society
noun a lively dance originating in France in the 18th century
originCirca 1750, in the sense of the dance, from French cotillon (“petticoat”), extended to the dance because of the distinctive lift of dress revealing the petticoat, from cotte (“dress”) + -illon (diminutive). Said to derive from the then-popular song Ma commère, quand je danse, mon cotillion va-t-il bien.
Etymology from Wiktionary, CC BY-SA 3.0