Archaic honorific term for the emperor, found in classical Japanese texts and mythology. Not used in modern language.
The expression '天津御姉' can be found in the Kojiki.
The standard modern term for the emperor of Japan. 天津御姉 is an archaic, honorific variant used only in historical or mythological contexts.
The exact derivation is uncertain; the spelling is conventionally associated with an archaic honorific title for the emperor.