Meaning of Royal Highness
- (in England)
- a title used prior to 1917 and designating a brother, sister, child, grandchild, aunt, or uncle belonging to the male line of the royal family.
- a title used since 1917 and designating a child or grandchild of the sovereign.
- any person given this title by the Crown.
- (in other countries) a person who is a member of a royal family.