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 for hostname
From The Free On-line Dictionary of Computing (30 December 2018) :

     1. (Or "sitename").  The unique name by which a computer is
     known on a network, used to identify it in electronic
     mail, Usenet news, or other forms of electronic
     information interchange.
     On the Internet the hostname is an ASCII string,
     e.g. "foldoc.doc.ic.ac.uk" which, consists of a local part
     (foldoc) and a domain name (doc.ic.ac.uk).  The hostname is
     translated into an Internet address either via the hosts
     file, NIS or by the Domain Name System (DNS) or
     resolver.  It is possible for one computer to have several
     hostnames (aliases) though one is designated as its
     canonical name.
     It is often possible to guess a hostname for a particular
     institution.  This is useful if you want to know if they
     operate network services like anonymous FTP, World-Wide
     Web or finger.  First try the institution's name or obvious
     abbreviations thereof, with the appropriate domain appended,
     e.g. "mit.edu".  If this fails, prepend "ftp." or "www." as
     appropriate, e.g. "www.data-io.com".  You can use the ping
     command as a quick way to test whether a hostname is valid.
     The folklore interest of hostnames stems from the creativity
     and humour they often display.  Interpreting a sitename is not
     unlike interpreting a vanity licence plate; one has to
     mentally unpack it, allowing for mono-case and length
     restrictions and the lack of whitespace.  Hacker tradition
     deprecates dull, institutional-sounding names in favour of
     punchy, humorous, and clever coinages (except that it is
     considered appropriate for the official public gateway machine
     of an organisation to bear the organisation's name or
     acronym).  Mythological references, cartoon characters, animal
     names, and allusions to SF or fantasy literature are probably
     the most popular sources for sitenames (in roughly descending
     order).  The obligatory comment is Harris's Lament: "All the
     good ones are taken!"
     See also network address.
     2. Berkeley Unix command to set and get the application
     level name used by the host.
     Unix manual page: hostname(1).

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