1
mother's family name
1
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?
2
only applies to
せい
hereditary title (used in ancient Japan to denote rank and political standing)
See also:
姓 (せい)
1
hereditary title (used in ancient Japan to denote rank and political standing);kabane
2
clan