boxen

from The Collaborative International Dictionary of English v.0.48
Boxen \Box"en\ (b[o^]ks"'n), a.
   Made of boxwood; pertaining to, or resembling, the box
   ({Buxus}). [R.]
   [1913 Webster]

         The faded hue of sapless boxen leaves.   --Dryden.
   [1913 Webster]
    
from Jargon File (4.4.4, 14 Aug 2003)
boxen
 /bok'sn/, pl.n.

   [very common; by analogy with {VAXen}] Fanciful plural of {box} often
   encountered in the phrase `Unix boxen', used to describe commodity
   {Unix} hardware. The connotation is that any two Unix boxen are
   interchangeable.
    
from The Free On-line Dictionary of Computing (8 July 2008)
boxen

   /bok'sn/ (By analogy with {VAXen}) A fanciful plural of {box}
   often encountered in the phrase "Unix boxen", used to describe
   commodity {Unix} hardware.  The connotation is that any two
   Unix boxen are interchangeable.

   [{Jargon File}]

   (1994-11-29)
    

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