Double-quick. Performed in the time called double-quick; as, a double-quick step or march.
Double-quick. To move, or cause to move, in double-quick time.
Double-rank. A line formed of double files.
Double-shell. A shell used in the 7-inch English rifles. It is 27 inches long, and has a large cavity. To strengthen it against outside pressure it has three internal longitudinal ribs projecting about an inch into the cavity.
Double-shotting. Is an increase of the destructive power of ordnance by doubling the shot fired off at one time from a gun. Sometimes three shots are fired at once, in which case the piece is said to be treble-shotted.
Double-time. The fastest time or step in marching, next to the run, requiring 165 steps, each 33 inches in length, to be taken in one minute. The degree of swiftness may vary in urgent cases, and the number of steps be thus increased up to 180 per minute.
Doubling. The putting of two ranks of soldiers into one.
Doublings. The heraldic term for the linings of robes or mantles, or of the mantlings of achievements.
Doullens. A town of France, 15 miles northeast of Amiens. This place was taken by the allies in 1814.
Doune. A village of Perthshire, Scotland. The ruins of Doune Castle, a large and massive fortress built about the 14th century, are situated on the point of a steep and narrow elevation. Doune was held for Prince Charles in 1745, and here he confined his prisoners taken at Falkirk, among the rest the author of the tragedy of “Douglas.”