clothing chosen as appropriate for a specific situation <a tuxedo is the only acceptable costume for men attending a formal event>
clothing put on to hide one's true identity or imitate someone or something else <Halloween costumes that caricature some of the “celebrities” created by the media over the past year> Related Words domino
Seen & Heard
What made you want to look up costume[noun]? Please tell us where you read or heard it (including the quote, if possible).