calamistrum
/kæləˈmɪstrʊm/Definitions
1. noun
a metal strip, especially of gold, used to divide the threads of a textile and give it a corded or ribbed appearance
“The designer used a calamistrum to create the decorative texture on the luxurious fabric.”
2. noun
a device used to raise the warp threads of a loom
“The calamistrum played a crucial role in the old-fashioned textile-making process.”