(nonstandard) The wife of one's uncle or aunt (parent's sibling). / The aunt of one's husband. / The aunt of one's wife.

(archaic) Brothers-in-law

plural of granddaughter-in-law

The wife of one's grandson or granddaughter.

plural of sister in law

Alternative form of sibling-in-law

plural of sibling in law

plural of in-law unit

(nonstandard) plural of son-in-law

(nonstandard) plural of daughter-in-law