personal, private / secret

(formal) first-person singular pronoun: I, me

Alternative spelling of 私達 (“we; us”)

一石六斗: (obsolete) being surprised twice; more specifically, describes the appearance of a woman who has a beautiful figure from behind but has an ugly face

one's own niece

(often derogatory) a young person born in the modern era; "kids these days"

representing relationship to a family

house of something, place where some business is conducted / person who does that thing

a house

a house / one's house