Language: Mandarin Chinese
Source: Period dictionary
Description
Kòuzi (扣子) literally means "little notch".1
It is the string notch found on either side of a bow.

Ear of a Qing bow made by the Changxing workshop, Chengdu.
Sold by Mandarin Mansion in 2019.

Ear of a Qing bow with a separate inserted shāo tóu of translucent horn to reinforce the string notch.
Sold by Mandarin Mansion in 2018.
Other bow parts

# |
English |
Chinese |
Pinyin transliteration |
Bow |
弓 |
Gōng |
|
1. | Bow grip | 弓弝 | Gōngbà |
2. | Sides of bow grip | 弓弝膀子 | Gōngbà bǎngzi |
3. | Arrow slipping spot | 箭溜子 | Jiàn liūzi |
4. | Bow ear | 弓弰 | Gōng shāo |
5. | Tip | 弰頭 | Shāo tóu |
6. | String notch | 扣子 | Kòuzi |
7. | String bridge | 弓墊子 | Gōng diànzi |
8. | Bow knee (lit. "brain") | 弓腦 | Gōng nǎo |
9. | Painted birch bark | 畫樺皮 | Huà huà pí |
10. | Bow face | 弓面 | Gōng miàn |
11. | Bowstring | 弓弦 | Gōng xián |
12. | Bowstring knot | 弦挌搭 | Xián gé dā |
Notes
All terms are from: Wuti Qingwen Jian (五體清文鑑) or "Five languages compendium", a Qing imperial dictionary in Manchu, Mongolian, Uighur, Tibetan, and Chinese of circa 1790. Published under the Qianlong emperor.