lease rod
A rod used in a loom to separate warp threads and maintain the cross (lease). Technical term in weaving.
綾竹は経糸の交差を保つために機に取り付けられる。
The lease rod is attached to the loom to maintain the warp cross.
綾 (aya, 'pattern' or 'twill') + 竹 (take, 'bamboo'), referring to a bamboo rod used in weaving. The exact historical derivation is uncertain.