A swimsuit (also swimmers), bathing suit (also bathers) or swimming costume (sometimes shortened to cozzie) is an item of clothing designed to be worn for swimming. In Commonwealth English swimsuits are sometimes called togs (a term also used to describe clothing in general). Swimsuits can be skin-tight or loosely fitting and range from garments designed to preserve as much modesty as possible to garments designed to reveal as much of the body as possible without actual nudity. They are often lined with a fabric that prevents them from becoming transparent when wet.

In recent years, the term monokini has come into use for topless bathing by women: where the bikini has two parts, the monokini is the lower part. Where monokinis are in use, the word bikini may jokingly refer to a two-piece outfit consisting of a monokini and a sun hat. The term was coined by Rudi Gernreich.

For information about the sling bikini please visit Wikipedia. Note: the above defination was from Wikipedia as well.