from the GNU version of the Collaborative International Dictionary of English
- adj. a discharge of firearms by soldiers in line, in quick succession, and in the order in which they stand.
Sorry, no etymologies found.
From right to left along the Battalions the platoon volleys flamed and flickered, a rolling fire that never stopped, the machine-like regularity of trained troops pouring four shots a minute into the dense mass of Frenchmen.