Main Entry: co·til·lion

Pronunciation: \kō-ˈtil-yən, kə-\

Variant(s): also co·til·lon \kō-ˈtil-yən, kə-, kȯ-tē-(y)ōⁿ\

Function: noun

Etymology: French cotillon, literally, petticoat, from Old French, from cote coat

Date: 1728

1 : a ballroom dance for couples that resembles the quadrille
2 : an elaborate dance with frequent changing of partners carried out under the leadership of one couple at formal balls
3 : a formal ball