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English definition of “costume”

costume

noun uk   /ˈkɒs.tjuːm/ us    /ˈkɑː.stuːm/
B2 [C or U] the set of clothes typical of a particular country or period of history, or suitable for a particular activity: Singers performing Mozart's operas often dress in/wear historical costume. The dancers leading the procession were in colourful and elaborate costumes.UK The shop has a good selection of bikinis and bathing/swimming costumes.Clothes worn for a particular job or activity B2 [C] (UK also fancy-dress costume) a set of clothes worn in order to look like someone or something else, especially for a party or as part of an entertainment: Our host was wearing a clown costume. The children were dressed in Halloween costumes.Clothes worn for a particular job or activity
(Definition of costume from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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