What is your highness meaning?

"Your Highness" is a form of address used to show respect and deference to a person of high rank or status, particularly royalty or nobility. The term is also commonly used to address princes and princesses. It is typically used in formal settings, such as addressing a monarch in a ceremonial capacity or to address a member of a royal family. The use of "Your Highness" dates back to medieval times and has been widely used ever since.