Definition of せい
- (n) surname; family name
あなたの姓はどう発音するのですか。
How do you pronounce your last name? - hereditary title (used in ancient Japan to denote rank and political standing)
- (n) height; stature
ジェーンは背を木にもたれかけて待っていた。
Jane was waiting with her back against the tree.
- (n) Qi (kingdom in China during the Spring and Autumn Period and the Period of the Warring States); Ch'i