imperial in WordNet English dictionary

1. a piece of luggage carried on top of a coach
   imperial 
   
2. a small tufted beard worn by Emperor Napoleon III
   imperial  imperial beard 
   

1. befitting or belonging to an emperor or empress
   "imperial palace"
   imperial 
   
2. relating to or associated with an empire
   "imperial colony"; "the imperial gallon was standardized legally throughout the British Empire"
   imperial 
   
3. of or belonging to the British Imperial System of weights and measures
   imperial 
   
4. 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"
   imperial  majestic  purple  regal  royal