costume
/ˈkɑːˌstuːm/ /Brit ˈk{scriptainv}ˌstjuːm/
noun
plural -tumes
[count] the clothes that are worn by someone (such as an actor) who is trying to look like a different person or thing
the clothes worn by a group of people especially during a particular time in the past
Brit :swimsuit
in costume
wearing a costume
adjective
always used before a noun
involving people wearing costumes