What is the meaning of the word "g-string"?

Definitions:

  1. A garment consisting of a narrow strip of cloth that covers the genitals and is attached to a waistband worn as underwear or by stiptease performers. copy to clipboard NOUN
    • The contestants return for the 'swimsuit' round, clad in light blue, bedazzled tulle g-strings. copy to clipboard

Synonyms: