heddle
noun
hed·dle ˈhe-dᵊl 
: one of the sets of parallel cords or wires that with their mounting compose the harness used to guide warp threads in a loom
Example Sentences
Recent Examples on the Web Consider a dress that turns traditional looming heddles into whooshing sequins that shimmied and whirred as the model walked down the runway, the sound itself a callback to the hubbub of a factory at its busiest hour. 
Steff Yotka, Vogue, 30 May 2019 Stoppelman explained that individual warp threads, which make up the longitudinal pattern in woven cloth, are put on a roller and then threaded individually through wire heddles, which are attached to a shaft and then to a foot treadle. Annie Gentile, Courant Community, 22 Mar. 2018
Steff Yotka, Vogue, 30 May 2019 Stoppelman explained that individual warp threads, which make up the longitudinal pattern in woven cloth, are put on a roller and then threaded individually through wire heddles, which are attached to a shaft and then to a foot treadle. Annie Gentile, Courant Community, 22 Mar. 2018 Word History
Etymology
probably alteration of Middle English helde, from Old English hefeld; akin to Old Norse hafald heddle, Old English hebban to lift — more at heave entry 1
First Known Use
1513, in the meaning defined above