||Co*thur"nus (-n?s), n. [L.] Same as Cothurn.
Co*tic"u*lar (k?-t?k"?-l?r), a. [L. coticula a small touchstone, dim. cos, cotis, whetstone.] Pertaining to whetstones; like or suitable for whetstones.
Co*tid"al (k?-t?d"al), a. Marking an equality in the tides; having high tide at the same time.
Cotidal lines (Phys. Geog.), lines on a map passing through places that have high tide at the same time.
{ ||Co`til`lon" (k&osl;`t&esl;`y˘N" or k&osl;`t&esl;l`-; 277), Co*til"lion (k&osl;*t&ibreve;l"yŭn), } n. [F. cotillon, fr. OF. cote coat, LL. cotta tunic. See Coat.] 1. A brisk dance, performed by eight persons; a quadrille.