Main Entry: broth·er–in–law

Pronunciation: \ˈbrə-thər-ən-ˌlȯ, ˈbrəth-rən-, ˈbrə-thərn-\

Function: noun

Inflected Form(s): plural broth·ers–in–law \ˈbrə-thərz-ən-\

Date: 14th century

1 : the brother of one's spouse
2 a : the husband of one's sister b : the husband of one's spouse's sister