天津御祖あまつみおや

noun

imperial ancestor; divine ancestor of the imperial line

Archaic Shinto term referring to the ancestral kami of the Japanese imperial family, especially Amaterasu. Used in classical Japanese and religious contexts.

• 天あま津つ御み祖おやは皇こう室しつの祖そ神しんとして祀まつられている。

  Amatsu-mioya is enshrined as the ancestral deity of the imperial house.