The Collaborative International Dictionary of English v.0.48:

Fiery \Fi"er*y\ (? or ?), a. [Formerly written firy, fr. fire.]
   1. Consisting of, containing, or resembling, fire; as, the
      fiery gulf of Etna; a fiery appearance.
      [1913 Webster]

            And fiery billows roll below.         --I. Watts.
      [1913 Webster]

   2. Vehement; ardent; very active; impetuous.
      [1913 Webster]

            Hath thy fiery heart so parched thine entrails?
                                                  --Shak.
      [1913 Webster]

            The fiery spirit of his forefathers.  --W. Irwing.
      [1913 Webster]

   3. Passionate; easily provoked; irritable.
      [1913 Webster]

            You know the fiery quality of the duke. --Shak.
      [1913 Webster]

   4. Unrestrained; fierce; mettlesome; spirited.
      [1913 Webster]

            One curbed the fiery steed.           --Dryden.
      [1913 Webster]

   5. heated by fire, or as if by fire; burning hot; parched;
      feverish. --Pope.
      [1913 Webster]

            The sword which is made fiery.        --Hooker.
      [1913 Webster]

   Fiery cross, a cross constructed of two firebrands, and
      pitched upon the point of a spear; formerly in Scotland
      borne by a runner as a signal for the clan to take up
      arms. --Sir W. Scott.
      [1913 Webster]