zhà
used in 柞水[Zha4 shui3] (the name of a place in Shaanxi)
柞栎
zuò lì
see also 槲樹|槲树[hu2 shu4]
柞水
zhà shuǐ
Zhashui County in Shangluo 商洛[Shang1 luo4], Shaanxi
柞水县
zhà shuǐ xiàn
柞蚕丝
zuò cán sī
tussah silk