What is the meaning of 西京?

"The Western Capital", a former name of:

1. Xi'an (西安), Shaanxi, during the Han, Sui, and Tang dynasties
2. Luoyang (洛陽／洛阳), Henan, during the later Jin dynasty
3. Datong (大同), Shanxi, during the Liao dynasty
4. Chengdu (成都), Sichuan, during its occupation by a short-lived successor state to the Ming.
5. Pyongyang (平壤), Korea, officially from before 921 to 1369 and poetically thereafter

Xi'an (西安), Shaanxi, during the Han, Sui, and Tang dynasties

Luoyang (洛陽／洛阳), Henan, during the later Jin dynasty

Datong (大同), Shanxi, during the Liao dynasty

Chengdu (成都), Sichuan, during its occupation by a short-lived successor state to the Ming.

Pyongyang (平壤), Korea, officially from before 921 to 1369 and poetically thereafter

a western capital, a former name of a number of cities including Kyoto (京都)

one of the proposed names of Kitakyushu (北九州)

hanja form of 서경 (“a western capital, a former name of a number of cities”)

chữ Hán form of Tây Kinh (“a western capital, a former name of a number of cities”)

Source: wiktionary.org