Meaning of “royal” - Learner’s Dictionary

royal

adjective us uk /ˈrɔɪəl/
Extra Examples
The newspapers are predicting a backlash against the royal family.Most of the magazine was devoted to coverage of the royal wedding.He was given the formality of a royal funeral.The article defends the role of the royal family.The prince is the youngest member of the royal family.

B2 relating to a queen or king and their family:

the British royal family
a royal visit
Royal

used in the UK as part of the title of a royal person:

His Royal Highness, the Duke of York

(Definition of “royal adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)