big iron

( n.)

   [common]  Large,  expensive,  ultra-fast computers. Used generally of
   {number-crunching}  supercomputers, but can include more conventional
   big  commercial  IBMish  mainframes. Term of approval; compare {heavy
   metal}, oppose {dinosaur}.

[glossary]
[Reference(s) to this entry by made by: {dinosaur}{dinosaurs mating}{GCOS}{heavy metal}{iron}{mainframe}]