taking a husband for one's daughter; adopting a son-in-law
Refers to the practice of bringing a husband into the wife's family, often with the man taking the wife's surname. Can also refer to the marriage ceremony or arrangement itself.
He joined the Yamada family as an adopted son-in-law.
In the past, taking a son-in-law was often done to continue the family line.
Compound of 婿 (muko, 'son-in-law') and 取り (tori, 'taking').