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An assembly or party of people wearing (usually elaborate or fanciful) masks and costumes, and amusing themselves with dancing, conversation, or other diversions.
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The act of wearing a mask or dressing up in a costume for, or as if for, a masquerade ball.
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(figuratively) An act of living under false pretenses; a concealment of something by a false or unreal show; a disguise, a pretence; also, a pretentious display.
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(figuratively) An assembly of varied, often fanciful, things.
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(fandom slang) A cosplay event at which costumed attendees perform skits.
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(obsolete) A dramatic performance by actors in masks; a mask or masque.
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(obsolete, rare) A Spanish entertainment or military exercise in which squadrons of horses charge at each other, the riders fighting with bucklers and canes.