from
The Collaborative International Dictionary of English v.0.48
Emperor \Em"per*or\, 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["o]l.), a large and handsome goose
({Philacte canagica}), found in Alaska.
{Emperor moth} (Zo["o]l.), 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["o]l.), a large, strong British
butterfly ({Apatura iris}).
[1913 Webster]