noun
Refers to an emperor, especially of historical empires such as China or Rome, or in a general monarchical context. For the Emperor of Japan, 天皇 (てんのう) is the specific term.
秦の始皇帝は中国を統一した。
Qin Shi Huang, the First Emperor, unified China.
ローマ皇帝の名前をいくつ
Do you know the names of some Roman emperors?