levirate
/ˈlevɪrɪt/noun
(一般作 the levirate)
- a custom of the ancient Hebrews and some other peoples by which a man may be obliged to marry his brother's widow娶寡嫂制, 叔娶嫂制（古希伯来及其他民族传统制度, 男人应娶亡兄的妻子）：
as modifier levirate marriages.叔娶嫂式婚姻。
词源
early 18th cent.: from Latin levir 'brother-in-law' + -ATE1.