G-string

noun

ˈjē-ˌstriŋ 

: an article of clothing that consists of a thin strip of cloth covering the genitals with the back portion made up of a string-like piece of fabric that passes between the buttocks and connects with a very thin waistband

Note: A G-string is typically worn as an article of underwear or swimwear or as part of the attire of a striptease dancer.

Word History

Etymology

origin unknown

First Known Use

1878, in the meaning defined above