'field gun' definitions:

Definition of 'field gun'

From: WordNet
noun
Movable artillery (other than antiaircraft) used by armies in the field (especially for direct support of front-line troops) [syn: field artillery, field gun]

Definition of 'field gun'

From: GCIDE
  • Fieldpiece \Field"piece`\, n. A cannon mounted on wheels, for the use of a marching army; a piece of field artillery; -- called also field gun. [1913 Webster]