妹いもうと婿むこいもうとむこじ字FuriganaMeanings1nounyounger sister's husband; brother-in-law (younger sister's spouse)Refers specifically to the husband of one's younger sister. Not used for an older sister's husband (see 姉婿).妹いもうと婿むこはとても親しん切せつな人ひとです。