What is the meaning of ?

a king, especially one who is not East Asian or was East Asian in pre-imperial times; in China and Vietnam, generally a king before Qin Shi Huangdi who invented the title 皇帝 (kōtei, huangdi; emperor); in Korea, one of the many kings before the Korean Empire which was modeled after Japan's; in Japan, one of the rulers before Emperor Jinmu

an East Asian queen regnant

a nobility title for a Chinese or Vietnamese prince, bestowed on one of the 皇帝 (kōtei, huangdi; emperor)'s adult sons, brothers, or nephews, especially as a coming-of-age title, generally comes with an estate ("principality"); compare 皇子 (ōji, imperial princes, especially pre-adult ones) and (, dukes, an alternative used by certain dynasties)

a Japanese prince's son (such princes include 親王 (shinnō) or (ō) themselves)

an ancient Korean king

a king

an East Asian queen regnant

an East Asian sovereign prince

an ancient Korean king

Source: wiktionary.org