[1] : The Collaborative International Dictionary of English v.0.48

emperor \em"peror\, n. of. empereor, empereour, f. empereur,
   l. imperator, fr. imperare to command; in in + parare to
   prepare, order. see parade, and cf. imperative,
   empress.
   the sovereign or supreme monarch of an empire; -- a title of
   dignity superior to that of king; as, the emperor of germany
   or of austria; the emperor or czar of russia.
   1913 webster

   emperor goose zo"ol., a large and handsome goose
      philacte canagica, found in alaska.

   emperor moth zo"ol., one of several large and beautiful
      bombycid moths, with transparent spots on the wings; as
      the american cecropia moth platysamia cecropia, and
      the european species saturnia pavonia.

   emperor paper. see under paper.

   purple emperor zo"ol., a large, strong british
      butterfly apatura iris.
      1913 webster
see also:
parade imperative empress emperor goose philacte canagica emperor moth 
platysamia cecropia saturnia pavonia emperor paper paper purple emperor 
apatura iris 

[2] : WordNet (r) 2.0

saturnia pavonia
     n : large moth of temperate forests of eurasia having heavily
         scaled transparent wings syn: emperor, emperor moth
see also:
emperor emperor moth 

Saturnia >> S Words
Saturnia, definition of term: Saturnia
saturnia_pag1.html