gû-kê牛椵

yoke

yoke; oxbow; wooden cangue placed on the mouth of a calf (to prevent it from sucking milk while the cow is being milked)

English Wiktionary, “牛椵” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E7%89%9B%E6%A4%B5 · confidence: Medium (Wiktionary)