chug

chug
    n 1: the dull explosive noise made by an engine
    v 1: make a dull, explosive sound; "the engine chugged down the
         street"
    

chug
 vi.

   To run slowly; to {grind} or {grovel}. "The disk is chugging like
   crazy."
    

chug

   <jargon> To run slowly; to {grind} or {grovel}.  "The disk is
   chugging like crazy."

   [{Jargon File}]

   (1995-03-25)