crayon

crayon n.  1. Someone who works on Cray supercomputers.
   More specifically, it implies a programmer, probably of the CDC
   ilk, probably male, and almost certainly wearing a tie
   (irrespective of gender).  Systems types who have a UNIX background
   tend not to be described as crayons.  2. A {computron} (sense 2)
   that participates only in {number-crunching}.  3. A unit of
   computational power equal to that of a single Cray-1.  There is a
   standard joke about this usage that derives from an old Crayola
   crayon promotional gimmick: When you buy 64 crayons you get a free
   sharpener.