(1):

(a.) Unrestrained; fierce; mettlesome; spirited.

(2):

(a.) heated by fire, or as if by fire; burning hot; parched; feverish.

(3):

(a.) Passionate; easily provoked; irritable.

(4):

(a.) Vehement; ardent; very active; impetuous.

(5):

(a.) Consisting of, containing, or resembling, fire; as, the fiery gulf of Etna; a fiery appearance.