droit de seigneur
noun/ˌdrwʌ də senˈjɜː(r)/
/ˌdrwʌ də senˈjɜːr/
[uncountable] (from French)- the right of a lord to have sex with a woman of lower social rank on her wedding night, said to exist in the Middle Ages
（据传中世纪领主对其封臣新娘的）初夜权 Word OriginFrench, literally ‘lord's right’.