A2
(the title of) a male ruler of a country, who holds this position because of his royal birth
Dictionary examples:
The new king's first royal order was to make ice cream for breakfast. (0.0)
The king tried to eat spaghetti with a crown instead of a fork. (0.0)
The king's pet chicken wore a tiny crown and ruled the royal coop. (0.0)
King Richard II (4.2)
the kings and queens of England (21.1)