cotillon

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co·til·lion

also co·til·lon C0676100 (kō-tĭl′yən, kə-)n.1. A formal ball, especially one at which young women are presented to society.2. a. A lively dance, originating in France in the 18th century, having varied, intricate patterns and steps.b. A quadrille.c. The music for these dances.
[French cotillon, from Old French, petticoat, diminutive of cote, coat; see coat.]
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