thong

noun

1. leather strip that forms the flexible part of a whip
2. underpants resembling a G-string; worn by women especially under very tight pants"she wore thongs in her quest for the callipygian ideal"
3. a thin strip of leather; often used to lash things together
4. minimal clothing worn by stripteasers; a narrow strip of fabric that covers the pubic area, passes between the thighs, and is supported by a waistband
5. a backless sandal held to the foot by a thong between the big toe and the second toe