a narrow piece of leather that is used to fasten something or as a whip （用以系物或做皮鞭的）皮条 a pair of women’s knickers or men’s underpants that has only a very narrow piece of cloth, like a string, at the back （背后为绳子一样窄条的）内裤；丁字内裤 - (North American English, Australian English, New Zealand English) (also flip-flop British and North American English)
a type of sandal (= open shoe), typically made of plastic or rubber, that has a piece that goes between the big toe and the toe next to it
Word OriginOld English thwang, thwong, of Germanic origin; related to German Zwang ‘compulsion’.