figure 4

Etymology
From the shape of the glyph "4", and creating a figure akin to that shape

Noun

 * 1)  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 "4" 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 "4" in shape.