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co·til·lionalso co·til·lon (kō-tĭl′yən, kə-)
1. A formal ball, especially one at which young women are presented to society.
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.]
n → Kotillon m