heir

heir /ˈeɚ/ noun
plural heirs
heir
/ˈeɚ/
noun
plural heirs
Britannica Dictionary definition of HEIR
[count]
1 
: a person who has the legal right to receive the property of someone who dies — often + to
2 
: a person who has the right to become a king or queen or to claim a title when the person holding it dies