swim·ming cos·tume
noun/ˈswɪmɪŋ kɒstjuːm/
/ˈswɪmɪŋ kɑːstuːm/
(British English) (also swimsuit British and North American English)
(North American English or old-fashioned bathing suit)
- a piece of clothing worn for swimming, especially the type worn by women and girls
（尤指女式）游泳衣