- a person's wife's sister's husband; or more generally your partner's brother-in-law, the bro of one partner in terms of the siblings of the various other spouse.
- an individual's brother-in-law or sister-in-law's bro; that is, a person's sibling's spouse's cousin (one's cousin's husband's cousin or a person's cousin's spouse's brother).
- Definition for "co-brother-in-law"
- a person's wife's sister's husband; or more generally…
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- Sentence for "co-brother-in-law"