婿むこ養よう子し

noun

adopted son-in-law; son-in-law taken into the family

A man who marries into his wife's family and is adopted as their son, often to carry on the family name or business. Common in traditional Japanese family structures.

• 彼かれは婿むこ養よう子しとして妻つまの家いえに入はいった。

  He entered his wife's family as an adopted son-in-law.

• 婿むこ養よう子しの制せい度どは、家か名めいを存そん続ぞくさせるために用もちいられることがある。

  The adopted son-in-law system is sometimes used to continue the family name.