Tra từ heir - Từ điển Oxford Advanced Learner 8th

heir [heir heirs] BrE [eə(r)] NAmE [er] noun ~ (to sth) | ~ (of sb)
1. a person who has the legal right to receive sb's property, money or title when that person dies
•to be heir to a large fortune
•the heir to the throne (= the person who will be the next king or queen)
•the son and heir of the Earl of Lancaster
2. a person who is thought to continue the work or a tradition started by sb else
•the president's political heirs Use an, not a, before heir.

Word Origin:
Middle English: via Old French from Latin heres.

Example Bank:
•At the age of twenty he fell heir to a large estate.
•He has no heir to leave his fortune to.
•He is the sole heir to a large mining fortune.
•He left most of his property to his eldest son and heir.
•He planned to marry and produce an heir for his estate.
•He's the future heir to the throne.
•On his brother's death he became heir apparent to the title.
•On his deathbed he named his second son as his heir.
•The house was her spiritual home for which she sought a spiritual heir.
•The socialists saw themselves as true heirs of the Enlightenment.
•When the Earl of Surrey died in 1347 he left no direct heir.