heir 
/ˈeɚ/ noun
plural heirs /ˈeɚ/ noun [count] 1 : a person who has the legal right to receive the property of someone who dies
▪ His heirs could inherit millions of dollars. — often + to ▪ She is the sole heir to her family's fortune. 2 : a person who has the right to become a king or queen or to claim a title when the person holding it dies
▪ The king left no heirs when he died.
▪ His heirs could inherit millions of dollars. — often + to ▪ She is the sole heir to her family's fortune.
▪ The king left no heirs when he died.
