primogeniture [ˌpraɪmoʊˈdʒenɪtʃə(r)]

例句:

• Primogeniture...supplanted the...custom of equal partition of lands.
  来自E. A. Freeman
• He inherited his father by right of his primogeniture.
  他凭着长子继承权,继承了他父亲的财产.
  
• Until now, primogeniture has largely determined which family members will join the business.
  来自WSJ
• The Government's plans challenge the ancient right of male primogeniture and so they should.
  来自THETIMES