A royal person; a member of a royal family.

A standard size of printing paper, measuring 25 by 20 inches.

A standard size of writing paper, measuring 24 by 19 inches.

Of or relating to a monarch or their family.

Having the air or demeanour of a monarch; illustrious; magnanimous; of more than common size or excellence.

In large sailing ships, of a mast right above the topgallant mast and its sails.

“royal mast;  royal sail”