heir - definition and synonyms

noun [countable] 

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  1. 1
    someone who will receive money, property, or a title when another person dies
    heir to:

    Hesketh was the heir to a grocery fortune.

    heir to the throne (=the next king or queen):

    Richard was now heir to the throne of the Angevin Empire.

  2. 2
    the next person to have a particular job or to continue someone’s work or ideas
    heir to:

    the heirs to Mussolini’s fascist regime