wheel

( n.)

   [from  slang  `big  wheel' for a powerful person] A person who has an
   active {wheel bit}. "We need to find a wheel to unwedge the hung tape
   drives."  (See  {wedged},  sense 1.) The traditional name of security
   group  zero  in  {BSD} (to which the major system-internal users like
   {root}  belong) is `wheel'. Some vendors have expanded on this usage,
   modifying Unix so that only members of group `wheel' can {go root}.

[glossary]
[Reference(s) to this entry by made by: {peon}{root}{superuser}{wizard}]