Em·per·or n. 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.
Emperor goose Zoöl., a large and handsome goose (Philacte canagica), found in Alaska.
Emperor moth Zoöl., 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 Zoöl., a large, strong British butterfly (Apatura iris).
n 1: the male ruler of an empire
2: red table grape of California
3: large moth of temperate forests of Eurasia having heavily
scaled transparent wings [syn: emperor moth, Saturnia
4: large richly colored butterfly [syn: emperor butterfly]