'Maxim gun' definitions:

Definition of 'Maxim gun'

(from WordNet)
noun
An obsolete water-cooled machine gun having a single barrel

Definition of 'Maxim gun'

From: GCIDE
  • Maxim gun \Max"im gun`\ A kind of machine gun; -- named after its inventor, Hiram S. Maxim. [Webster 1913 Suppl.]