v. i. & t. (Mil.) To move, or cause to move, in double-quick time. [ 1913 Webster ]

a. (Mil.) Of, or performed in, the fastest time or step in marching, next to the run; as, a double-quick step or march. [ 1913 Webster ]

n. Double-quick time, step, or march. [ 1913 Webster ]

☞ Double-quick time requires 165 steps, each 33 inches in length, to be taken in one minute. The number of steps may be increased up to 180 per minute. [ 1913 Webster ]