Definitions for "String bikini"
A narrow strip of fabric or elastic joins the front and rear panels of the traditional bikini cut panty.
a more amateur index revealing alternative style where both top and bottom are reduced to triangles of cloth connected by strings
This style is the lowest cut and least coverage of the men's underwear styles (thong and jock strap excluded). It sits approximately 4" below the waistline and has no side panels. The leg openings go all the way up to the elastic waistband, which is a "string" style band, connecting front and back panels. Full seat coverage but without a working fly.