柯林斯词典brother-in-law (brothers-in-law) 1. N-COUNT Someone's brother-in-law is the brother of their husband or wife, or the man who is married to their sister. 姐夫; 妹夫 返回 brother-in-law剑桥词典the husband of your sister or brother , or the brother of your husband or wife , or the man who is married to the sister or brother of your wife or husband 大伯子；小叔子；內兄；內弟；姐夫；妹夫；連襟 返回 brother-in-law