皇祖おおじのみことFreq.FrequencyTop 100,000Meanings1noungrandfather of the emperorarchaicArchaic honorific term for the emperor's grandfather, used in historical or classical contexts.古ふるい記き録ろくには、皇祖おおじのみことの名なが記しるされている。In old records, the name of the emperor's grandfather is written.