expression, ichidan verb
register a name in the family register; enter a name in the koseki
Refers to the legal act of adding a person's name to a family register (koseki), typically through marriage, adoption, or birth registration. Often used in the context of marriage when one spouse joins the other's family register.
See also: 籍を入れる (せきをいれる)
結婚して、夫の籍に入れることにした。
After getting married, I decided to have my name entered in my husband's family register.
養子縁組で、子供を自分の籍に入れた。
Through adoption, I had the child registered in my family register.