1.Definition: being of the rank of a monarch
"Of royal ancestry", "Princes of the blood royal"
2.Definition: belonging to or befitting a supreme ruler
"Treated with royal acclaim", "The royal carriage of a stag's head"
3.Definition: established or chartered or authorized by royalty
"The Royal Society"
4.Definition: invested with royal power as symbolized by a crown
"The royal (or crowned) heads of Europe"
5.Definition: of or relating to or indicative of or issued or performed by a king or queen or other monarch
"The royal party", "The royal crest", "By royal decree", "A royal visit"