thong in WordNet English dictionary

1. a backless sandal held to the foot by a thong between the big toe and the second toe
   flip-flop  thong 
   
2. 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
   G-string  thong 
   
3. leather strip that forms the flexible part of a whip
   lash  thong 
   
4. a thin strip of leather; often used to lash things together
   thong 
   
5. underpants resembling a G-string; worn by women especially under very tight pants
   "she wore thongs in her quest for the callipygian ideal"
   thong