'Minute gun' definitions:

Definition of 'minute gun'

From: WordNet
noun
(military) gun that is discharged once every minute (usually as part of a military funeral)

Definition of 'Minute gun'

From: GCIDE
  • Minute \Min"ute\, a. Of or pertaining to a minute or minutes; occurring at or marking successive minutes. [1913 Webster]
  • Minute bell, a bell tolled at intervals of a minute, as to give notice of a death or a funeral.
  • Minute book, a book in which written minutes are entered.
  • Minute glass, a glass measuring a minute or minutes by the running of sand.
  • Minute gun, a discharge of a cannon repeated every minute as a sign of distress or mourning.
  • Minute hand, the long hand of a watch or clock, which makes the circuit of the dial in an hour, and marks the minutes. [1913 Webster]