G-string

Từ điển Việt Anh Việt 4in1 - English Vietnamese 4 in 1 Dictionary

G-string /ˈdʒiː strɪŋ/ BrE AmE noun [countable]
[Date: 1800-1900; Origin: Perhaps from G string 'fourth string on a violin', perhaps influenced by gee]
a very small piece of underwear that covers only the sexual organs