Noun
(networking) The unique name by which any device attached to a computer network is known.
(computing, Internet) A computer or other network device's Internet domain name; a fully qualified hostname.
(computing, Internet) The portion of a computer's Internet domain name that comes before the first period; an unqualified hostname.
Source: en.wiktionary.orgA single-bit sub-field indicates if the DNS server is authoritative for the queried hostname. Source: Internet
Ad providers also receive a pretty creepy volume of tracking data and can be a good place to look as well — you can often tell what these are by the hostname. Source: Internet
Access can be controlled based on the client hostname or IP address. Source: Internet
Initially addresses were of the form, username@hostname RFC 805, 8 February 1982, Computer Mail Meeting Notes but were extended to "username@host. Source: Internet
This allows the mailer to dial an IP address or hostname via Telnet, rather than dialing a real POTS phone number. Source: Internet
A solution called Server Name Indication (SNI) exists, which sends the hostname to the server before encrypting the connection, although many older browsers do not support this extension. Source: Internet