Co-tĭl'lon or Co-tĭl'lion, n.
(ko-tĭl'yun) (Synop., § 130), n. [Fr. cotillon, from O. Fr. cote, Pr. cota, cot, It. cotta, L. Lat. cotta, cottus, tunic. See COAT.]
Sense 1. A brisk dance, performed by eight persons together; a quadrille.
Sense 2. A tune which regulates the dance.