box

box n.  1. A computer; esp. in the construction `foo
   box' where foo is some functional qualifier, like
   `graphics', or the name of an OS (thus, `UNIX box', `MS-DOS
   box', etc.)  "We preprocess the data on UNIX boxes before handing
   it up to the mainframe."  2. [IBM] Without qualification but
   within an SNA-using site, this refers specifically to an IBM
   front-end processor or FEP /F-E-P/.  An FEP is a small computer
   necessary to enable an IBM {mainframe} to communicate beyond the
   limits of the {dinosaur pen}.  Typically used in expressions
   like the cry that goes up when an SNA network goes down: "Looks
   like the {box} has fallen over." (See {fall over}.) See also
   {IBM}, {fear and loathing}, {fepped out}, {Blue Glue}.