/tɛˈsteɪtə/ – noun
Definition: 1. người để lại chúc thư, người thừa kế;
2. nhân chứng.
A more thorough explanation: A testator is a person who has made a valid will or testament, which is a legal document that outlines how their property and assets should be distributed after their death.
Example: The testator’s will clearly outlined how their assets should be distributed among their children.