brother-in-law

[ bruhth-er-in-law ]
/ ˈbrʌð ər ɪnˌlɔ /

noun, plural broth·ers-in-law.

the brother of one's husband or wife.
the husband of one's sister.
the husband of one's wife's or husband's sister.

Origin of brother-in-law

Middle English word dating back to 1250–1300

Example sentences from the Web for brother-in-law

British Dictionary definitions for brother-in-law

brother-in-law

noun plural brothers-in-law

the brother of one's wife or husband
the husband of one's sister
the husband of the sister of one's husband or wife