The Collaborative International Dictionary of English v.0.48:

Tourist \Tour"ist\, n.
   One who makes a tour, or performs a journey, especially for
   pleasure.
   [1913 Webster +PJC]

WordNet (r) 3.0 (2006):

tourist
    n 1: someone who travels for pleasure [syn: tourist, tourer,
         holidaymaker]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "tourist":
   adventurer, alpinist, astronaut, camper, climber, comers and goers,
   commuter, cosmopolite, cruiser, excursionist, explorer, fare,
   globe-girdler, globe-trotter, goer, hajji, jet set, jet-setter,
   journeyer, mariner, mountaineer, palmer, passenger, passerby,
   pathfinder, pilgrim, pioneer, rubberneck, rubbernecker, sailor,
   sightseer, slummer, straphanger, tourer, trailblazer, trailbreaker,
   transient, traveler, traveller, trekker, tripper, viator,
   visiting fireman, visitor, voortrekker, voyager, voyageur,
   wayfarer, world-traveler



The Jargon File (version 4.4.7, 29 Dec 2003):

tourist
 n.

    1. [ITS] A guest on the system, especially one who generally logs in over a
    network from a remote location for comm mode, email, games, and other
    trivial purposes. One step below luser. ITS hackers often used to spell
    this turist, perhaps by some sort of tenuous analogy with luser (this
    usage may also have expressed the ITS culture's penchant for
    six-letterisms, and/or been some sort of tribute to Alan Turing). Compare 
    twink, lurker, read-only user.

    2. [IRC] An IRC user who goes from channel to channel without saying
    anything; see channel hopping.


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

tourist

    A guest on the system, especially one who generally
   logs in over a network from a remote location for comm mode,
   electronic mail, games and other trivial purposes.  A
   tourist is one step below a luser.

   Hackers often spell this turist, perhaps by some sort of
   tenuous analogy with luser (this also expresses the ITS
   culture's penchant for six-letterisms).

   Compare twink, read-only user.

   [Jargon File]

   (1995-03-10)