/ˈruː.lər/ – Noun
Definition: người cai trị, người nắm quyền.
A more thorough explanation: In legal terms, a “ruler” refers to a person who holds a position of authority or power over a particular territory or group of people, such as a monarch, president, or other governmental leader. This term is often used in the context of constitutional law and governance to describe individuals who have the legal right to make decisions and enforce laws within a specific jurisdiction.
Example: The ruler of the country signed the new legislation into law.