Definition of costume party in English English dictionary
A social gathering of people wearing disguises or costumes, and amusing themselves with dancing, conversation, or other diversions
Virginia Democratic Congressional candidate Krystal Ball went to a costume party when she was 22 dressed as a sexy Santa.
A fancy dress party (British English) or a costume party (American English) is a type of party, common mainly in contemporary Western culture, where guests dress up in costumes. Costumed Halloween parties are popular in the United States, Canada, Australia and New Zealand
A fancy dress party (British English) or a costume party (American English), mainly in contemporary Western culture, is a type of party where guests dress up in a costume