'Spitfire' definitions:

Definition of 'spitfire'

From: WordNet
noun
A highly emotional and quick-tempered person (especially a girl or woman)

Definition of 'Spitfire'

From: GCIDE
  • Spitfire \Spit"fire`\, n. A violent, irascible, or passionate person. [Colloq.] --Grose. [1913 Webster]