摂政

Etymology 1
→ →  →  →

From compound. Compare modern 🇨🇬.

The goon, so likely the reading as first borrowed.

Noun

 * 1)  the chief advisor to the emperor, similar to a viceroy or vizier

Etymology 2
Shift in reading of shōshō above, using the kan'yōyomi of setsu for the character.

Noun

 * 1) a regent: one who rules in the place of a monarch because the monarch is too young, absent, or disabled
 * 2) regency: the position or station of a regent
 * 3)  the chief advisor to the emperor, similar to a viceroy or vizier

Derived terms

 * : the Prince Regent