1
- a set of clothes in a style typical of a particular country or historical period（特定国家或历史时期流行的）服装; 全套服饰：
authentic Elizabethan costumes
真正的伊丽莎白时期的服饰
mass noun a Chinese woman in national costume穿着民族服装的中国妇女。
1.1
- a set of clothes worn by an actor or performer for a particular role戏服; 演出服：
a nun's costume.
尼姑的演出服。
1.2
- Brit. a swimming costume〈英〉泳衣; 泳装。
1.3
- Brit. dated a woman's matching jacket and skirt〈英, 旧〉女式套装：
a chic black costume and white fur wrap
时髦的黑色套装和白色毛皮围巾。
with obj.
- dress (someone) in a particular set of clothes给（某人）穿上特定服装：
an all-woman troupe elaborately costumed in clinging silver lame
穿着缀有银片的精致服饰的女子歌舞团。
词源
early 18th cent.: from French, from Italian custume 'custom, fashion, habit', from Latin consuetudo （see CUSTOM）.