primogeniture
n[U]
1 fact of being a first-born child 长嗣身分.
2 (also right of primogeniture) (law 律) system of inheritance by which an eldest son receives his parents' property 长子继承权.
🗣️ 情景例句
The kids hang their stockings over the fireplace for Santa Claus to fill them with candies and toys.