underpants resembling a G-string; worn by women especially under very tight pants
"she wore thongs in her quest for the callipygian ideal"
a thin strip of leather; often used to lash things together
"The carpenter hammered in wedges and secured them with a rough thong made from old shoe leather."
A strip of leather.
"The black thong cut across his foot as he stepped on the old rope."
A surname.
"The Thongs were known for their impressive athletic feats at the local track meet."
The word thong comes from Old English þwong, which originally meant a strip of leather or cord. It traveled into Middle and then Modern English with this same core meaning of a strap or band.