\Box"en\ (b[o^]ks"'n), a. Made of boxwood; pertaining to, or resembling, the box ({Buxus}). [R.] The faded hue of sapless boxen leaves. --Dryden.
/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]
Webster's 1913 Dictionary