co-sister-in-law

listen to the pronunciation of co-sister-in-law
Английский Язык - Английский Язык
one's brother-in-law or sister-in-law's sister; that is, one's sibling's spouse's sister (one's sister's husband's sister or one's brother's wife's sister)

in plural The relationship between women whose brother and sister are married to each other.

one's husband's brother's wife; or more generally one's spouse's sister-in-law, the sister of one spouse in relation to the siblings of the other spouse

in plural The relationship between women who marry brothers.

co-sister-in-law
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