A more thorough explanation:

Definition: A heredero is a term used in Spanish law to refer to either an heir or legatee, or an owner of a cultivated farm.

Examples:

• When the wealthy businessman passed away, his son became the heredero of his entire estate.
• The heredero of the farm worked hard every day to ensure that the crops were healthy and the land was well-maintained.

The first example illustrates the first definition of heredero, as the son inherited his father's estate. The second example illustrates the second definition, as the heredero is the owner of a cultivated farm and is responsible for its upkeep.