a direction of the twist in yarns, from top left to bottom right, resembling the long stroke of the letter S.
What’s The #’s Real Name?A hash has referred to stripes on military jackets since as early as 1910. But, in the 1980s, people started using hash to refer to the # symbol.
Compare Z twist.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for s twist
The spirals formed by twisting may extend upward to the left (the S-twist) or to the right (the Z-twist).Chincha Plain-weave cloths|Lila M. O'Neale