A more thorough explanation:

Definition: A queen dowager is a queen who is the widow of a king and holds the title because of her marriage to the deceased king. She is not the reigning monarch, but she may still hold some influence and power.

Example: Queen Elizabeth, the Queen Mother, was a queen dowager after her husband, King George VI, passed away. She was not the reigning monarch, but she still held a significant role in the royal family and was beloved by the people of England.

Explanation: The example illustrates the definition of a queen dowager by showing how Queen Elizabeth, as the widow of a king, held the title of queen dowager. Even though she was not the reigning monarch, she still had an important role in the royal family and was respected and admired by many.