始馭天下之天皇

はつくにしらすすめらみことhatsukunishirasusumeramikoto

noun

first emperor to rule the land (title bestowed upon Emperor Jimmu on his coronation)

Kanji in this word

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences