1. [n]  a step in walking or running
2. [n]  the relative speed of progress or change; "he lived at a fast pace"; "he works at a great rate"; "the pace of events accelerated"
3. [n]  a unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride
4. [n]  the distance covered by a step; "he stepped off ten paces from the old tree and began to dig"
5. [n]  the rate of moving (especially walking or running)
6. [n]  the rate of some repeating event
7. [v]  measure by pacing, as of distances
8. [v]  measure by pacing, as of a room
9. [v]  regulate or set the pace of; "Pace your efforts"
10. [v]  walk with slow or fast paces; "He paced up and down the hall"
11. [v]  go at a pace, as of a horse

1. \Pace\, n. [OE. pas, F. pas, from L. passus a step, pace,
   orig., a stretching out of the feet in walking; cf. pandere,
   passum, to spread, stretch; perh. akin to E. patent. Cf.
   {Pas}, {Pass}.]
   1. A single movement from one foot to the other in walking; a
      step.
   2. The length of a step in walking or marching, reckoned from
      the heel of one foot to the heel of the other; -- used as
      a unit in measuring distances; as, he advanced fifty
      paces. ``The heigh of sixty pace .'' --Chaucer.
   Note: Ordinarily the pace is estimated at two and one half
         linear feet; but in measuring distances be stepping,
         the pace is extended to three feet (one yard) or to
         three and three tenths feet (one fifth of a rod). The
         regulation marching pace in the English and United
         States armies is thirty inches for quick time, and
         thirty-six inches for double time. The Roman pace
         (passus) was from the heel of one foot to the heel of
         the same foot when it next touched the ground, five
         Roman feet.
   3. Manner of stepping or moving; gait; walk; as, the walk,
      trot, canter, gallop, and amble are paces of the horse; a
      swaggering pace; a quick pace. --Chaucer.
            To-morrow, and to-morrow, and to-morrow, Creeps in
            this petty pace from day to day.      --Shak.
            In the military schools of riding a variety of paces
            are taught.                           --Walsh.
   4. A slow gait; a footpace. [Obs.] --Chucer.
   5. Specifically, a kind of fast amble; a rack.
   6. Any single movement, step, or procedure. [R.]
            The first pace necessary for his majesty to make is
            to fall into confidence with Spain.   --Sir W.
                                                  Temple.
   7. (Arch.) A broad step or platform; any part of a floor
      slightly raised above the rest, as around an altar, or at
      the upper end of a hall.
   8. (Weaving) A device in a loom, to maintain tension on the
      warp in pacing the web.
   {Geometrical pace}, the space from heel to heel between the
      spot where one foot is set down and that where the same
      foot is again set down, loosely estimated at five feet, or
      by some at four feet and two fifths. See {Roman pace} in
      the Note under def. 2. [Obs.]
   {To} {keep, or hold}, {pace with}, to keep up with; to go as
      fast as. ``In intellect and attainments he kept pace with
      his age.'' --Southey.
   

2. \Pace\, v. i. [imp. & p. p. {Paced}; p. pr. & vb. n.
   {Pacing}.]
   1. To go; to walk; specifically, to move with regular or
      measured steps. ``I paced on slowly.'' --Pope. ``With
      speed so pace.'' --Shak.
   2. To proceed; to pass on. [Obs.]
            Or [ere] that I further in this tale pace.
                                                  --Chaucer.
   3. To move quickly by lifting the legs on the same side
      together, as a horse; to amble with rapidity; to rack.
   4. To pass away; to die. [Obs.] --Chaucer.
   

3. \Pace\, v. t.
   1. To walk over with measured tread; to move slowly over or
      upon; as, the guard paces his round. ``Pacing light the
      velvet plain.'' --T. Warton.
   2. To measure by steps or paces; as, to pace a piece of
      ground.
   3. To develop, guide, or control the pace or paces of; to
      teach the pace; to break in.
            If you can, pace your wisdom In that good path that
            I would wish it go.                   --Shak
   {To pace the web} (Weaving), to wind up the cloth on the
      beam, periodically, as it is woven, in a loom.
   

A CPU based on the Nova design, but with 16-bit addressing, more addressing modes and a 10 level stack (like the Intel 8008).