co-brother-in-law

Meaning

Noun

• One's spouse's brother-in-law (one's spouse's sibling's husband), especially one's wife's sister's husband; either of two (or more) men who marry sisters, in relation to the other; the brother of one spouse in relation to the siblings of the other spouse.
• One's brother-in-law's or sister-in-law's brother; that is, one's sibling's spouse's brother; either of two (or more) men whose siblings are married to each other.

Related

Similar words

• co-brother (much more common)
• co-uncle (in relation to a common niece or nephew)

Origin

• From co- + brother-in-law or co-brother + -in-law.