Hishi 菱
Japanese for a diamond or rhombus shape; hishi shibari (菱縛り, also written 菱縄縛り) names ties whose rope forms diamond patterns on the body.
In Japanese, hishi (菱) names a water plant, the water caltrop, and, as a short form of hishigata, the rhombus or diamond shape, which also appears in decorative patterns and family crests. In rope, Shibari Study and Rope365 use hishi for ties that create diamond, or lozenge, shapes on the body. Shibari Study writes the tie as 菱縛り and also gives hishi nawa shibari; Japanese Wikipedia writes 菱縄縛り and draws the line against kikkō: strictly, rope forming hexagons is kikkō and rope forming diamonds is hishi, though some people count diamond ties as a kind of kikkō because the result also looks like a shell. In Western use the diamond body harness is often called a karada, a label Shibari Study considers inaccurate.