brother-in-law
noun
noun
1
the
brother
of
your
husband
or
wife
内兄; 内弟; 大伯; 小叔
2
the
husband
of
your
sister
姐夫; 妹夫
3
the
husband
of
your
husband
or
wife’s
sister
配偶的姐夫 （妹夫 ）; 连襟;