thong

Short definition from Wiktionary

Noun

1. 1
   A narrow strip of material, typically leather, used to fasten, bind, or secure objects.
2. 2
   An item of footwear, usually of rubber, secured by two straps which join to pass between the big toe and its neighbour.
3. 3
   An item of clothing, usually an undergarment or swimwear consisting of very narrow strips designed to cover just the genitals and nothing more.
4. 4
   The largest section of a bullwhip constructed of many straps of braided leather.

Proper noun

1. 1
   A surname.