heir
noun [ C ]
uk/eər/ us LAW
the person who legally receives money, property, or possessions from someone who has died:
Court documents showed that each heir was entitled to land and shares of stock in the businesses.
heir to sth When her father died, she became the sole heir to his £40,000 estate.
heir of sth The heirs of the company's founder control about 39% of the business.
someone who becomes the new leader of a large organization or company after the old leader leaves:
heir to sb He was a potential heir to retiring CEO Jack Welch.