1. (military) gun that is discharged once every minute (usually as part of a military funeral);
The Collaborative International Dictionary of English v.0.48:
Minute \Min"ute\, a.
Of or pertaining to a minute or minutes; occurring at or
marking successive minutes.
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.
WordNet (r) 3.0 (2006):
n 1: (military) gun that is discharged once every minute
(usually as part of a military funeral)