primogeniture
noun /ˌpraɪməʊˈdʒenɪtʃə(r)/
/ˌpraɪməʊˈdʒenɪtʃər/
[uncountable]- (law
法律 长子继承权 - (formal) the fact of being the first child born in a family
长子身份；长嗣身份
词源early 17th cent.: from medieval Latin primogenitura, from Latin primo ‘first’ + genitura ‘geniture’ (a person's birth).