[1] : The Collaborative International Dictionary of English v.0.48

commuter \commut"er\ ko^mm=u"t~er, n.
   one who commutes; especially, one who commutes in traveling.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

commuter \commut"er\ ko^mm=u"t~er, a.
   of or pertaining to commuting, in the sense of traveling;
   used for commuting; as, a commuter airline.
   pjc

[3] : WordNet (r) 2.0

commuter
     n 1: a passenger train that is ridden primarily by commuters
          syn: commuter train
     2: someone who travels regularly from home in a suburb to work
        in a city
see also:
commuter train 

[4] : Moby Thesaurus II by Grady Ward, 1.0

46 moby thesaurus words for "commuter":
   adventurer, alpinist, astronaut, camper, climber, comers and goers,
   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,
   straphanger, tourer, tourist, trailblazer, trailbreaker, transient,
   traveler, trekker, tripper, viator, visiting fireman, voortrekker,
   voyager, voyageur, wayfarer, world-traveler

Commuter >> C Words
Commuter, definition of term: Commuter
commuter_pag1.html

Commuter Train >> C Words
Commuter Train, definition of term: Commuter Train
commuter+train_pag1.html