/ˈkɒstju:m; US -tu:m ||; ˈkɑstum/noun[C,U] 1 a set or style of clothes worn by people in a particular country or in a particular historical period (某地或某时期的)服装: 17th century costume 17世纪的服装Welsh national costume 威尔士的民族服装
2 [C,U] clothes that an actor, etc wears in order to look like sth else 戏装等: One of the children was dressed in a pirate's costume. 孩子当中的一个穿着海盗服装。The last rehearsal of the play will be done in costume. 该戏的最后一次排练要穿上戏装。
3 [C] (Brit 英) =SWIMSUIT