brother-in-law

Entry Definition
his brother-in-law
they are brothers-in-law to each other; they call each other brother-in-law
they are related to each other as brothers-in-law
h/ spouse's sibling's spouse; h/ sister- or brother-in-law related in this way
her sister-in-law, her brother-in-law
they are related as brother- or sister-in-law