英和和英

語源

figure +‎ 9 From the shape of the glyph "9", and creating a figure akin to that shape

別の表記

• figure nine

名詞

figure 9 (複数形 figure 9s)

1. (climbing) A technical climbing technique used in ice climbing to gain a respite and lessen slack and distance from the undersurface/ceiling which one is climbing underneath, which appears like a number "9" in shape, with one arm anchoring the climber to the surface while hanging upside-down, and one leg wrapped around that arm, forming a figurative "9" in shape.

参考

• figure-of-nine / figure-of-9