imperial

a small tufted beard worn by Emperor Napoleon III

a piece of luggage carried on top of a coach

relating to or associated with an empire; "imperial colony"; "the imperial gallon was standardized legally throughout the British Empire"

of or belonging to the British Imperial System of weights and measures

befitting or belonging to an emperor or empress; "imperial palace"

belonging to or befitting a supreme ruler; "golden age of imperial splendor"; "purple tyrant"; "regal attire"; "treated with royal acclaim"; "the royal carriage of a stag's head"