costume

Noun

• the attire characteristic of a country or a time or a social class
  • he wore his national costume
    

• the prevalent fashion of dress (including accessories and hair style as well as garments)

• unusual or period attire not characteristic of or appropriate to the time and place
  • in spite of the heat he insisted on his woolen costume
    

• the attire worn in a play or at a fancy dress ball
  • he won the prize for best costume
    

Verb

• furnish with costumes; as for a film or play

• dress in a costume
  • We dressed up for Halloween as pumpkins