thong (Noun) — Leather strip that forms the flexible part of a whip.
thong (Noun) — Underpants resembling a G-string; worn by women especially under very tight pants. ex. "she wore thongs in her quest for the callipygian ideal"
thong (Noun) — A thin strip of leather; often used to lash things together.
thong (Noun) — 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.
thong (Noun) — A backless sandal held to the foot by a thong between the big toe and the second toe.