heddle.

/hed-l/US // ˈhɛd l //UK // (ˈhɛdəl) //

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Definitions

1.
- ›one of the sets of vertical cords or wires in a loom, forming the principal part of the harness that guides the warp threads.

Each thread or group of threads of the warp passes through an opening (eye) of a heddle.
The next movement of the heddle frame crossed the threads over the filling and made a new opening for the return of the shuttle.
K, a strong wooden ruler, connecting the front heddle with its treddle.
These tape-looms are a truly ancient form of appliance for the hand-weaving of narrow bands,—a heddle-frame.
The Greek loom may have been furnished with a heddle but the drawings are not clear on this point.