palace of a retired emperor
Archaic term referring to the residence of a retired emperor in pre-modern Japan. Now mainly encountered in historical contexts or place names.
The Sentō Imperial Palace in Kyoto was once the residence of a retired emperor.
Compound of 仙洞 (sentō, literally 'hermit cave', a poetic reference to a retired emperor's residence) and 御所 (gosho, 'imperial palace'). The exact historical derivation is uncertain.