noun
brother-in-law (husband's brother)
Refers specifically to one's husband's brother. The term is somewhat dated and may carry a traditional or in-law family nuance; in modern casual speech, people often use 義理の兄 or 義理の弟 instead.
小舅にあたる人が、正月に訪ねてきた。
My husband's brother came to visit during the New Year holidays.