See also: cotillon Spanish Noun cotillón m (plural cotillones) party, especially a New Year's Eve party cotillion Related terms cotillacotillearcotilleo Further reading “cotillón”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10 Wikiwand - on Seamless Wikipedia browsing. On steroids.