Definition of "Pace" :
noun: a step in walking or running
noun: the relative speed of progress or change
"He lived at a fast pace."
noun: a unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride
noun: the distance covered by a step
"He stepped off ten paces from the old tree and began to dig."
noun: the rate of moving (especially walking or running)
noun: the rate of some repeating event
verb: measure (distances) by pacing
verb: regulate or set the pace of
"Pace your efforts."
verb: walk with slow or fast paces
"He paced up and down the hall."
verb: go at a pace
"The horse paced."