Definitions of royal:

• noun:   stag with antlers of 12 or more branches
• noun:   a sail set next above the topgallant on a royal mast
• adjective:   being of the rank of a monarch

  Example: "Of royal ancestry"

• adjective:   of or relating to or indicative of or issued or performed by a king or queen or other monarch

  Example: "The royal party"

• adjective:   established or chartered or authorized by royalty

  Example: "The Royal Society"

• adjective:   invested with royal power as symbolized by a crown

  Example: "The royal (or crowned) heads of Europe"

• adjective:   belonging to or befitting a supreme ruler

  Example: "Treated with royal acclaim"

• name:  A male given name (rare: 1 in 16666 males; popularity rank in the U.S.: #851)
• name:  A surname (common: 1 in 20000 families; popularity rank in the U.S.: #2506)