figure 4

• figure four

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

figure 4 (plural figure 4s)

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 "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.
2. (combat sports) Alternative form of figure four

• figure-of-four / figure-of-4