grind

grind vt.  1. [MIT and Berkeley] To prettify hardcopy of
   code, especially LISP code, by reindenting lines, printing keywords
   and comments in distinct fonts (if available), etc.  This usage was
   associated with the MacLISP community and is now rare;
   {prettyprint} was and is the generic term for such
   operations.  2. [UNIX] To generate the formatted version of a
   document from the {{nroff}}, {{troff}}, {{TeX}}, or Scribe
   source.  3. To run seemingly interminably, esp. (but not
   necessarily) if performing some tedious and inherently useless
   task.  Similar to {crunch} or {grovel}.  Grinding has a
   connotation of using a lot of CPU time, but it is possible to grind
   a disk, network, etc.  See also {hog}.  4. To make the whole
   system slow.  "Troff really grinds a PDP-11."  5. `grind grind'
   excl. Roughly, "Isn't the machine slow today!"