From The Collaborative International Dictionary of English v.0.48:

Travel \Trav"el\, v. i. [imp. & p. p. Traveledor Travelled;
   p. pr. & vb. n. Traveling or Travelling.] [Properly, to
   labor, and the same word as travail.]
   1. To labor; to travail. [Obsoles.] --Hooker.
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   2. To go or march on foot; to walk; as, to travel over the
      city, or through the streets.
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   3. To pass by riding, or in any manner, to a distant place,
      or to many places; to journey; as, a man travels for his
      health; he is traveling in California.
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   4. To pass; to go; to move.
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            Time travels in divers paces with divers persons.
                                                  --Shak.
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From The Collaborative International Dictionary of English v.0.48:

Travel \Trav"el\, v. t.
   1. To journey over; to traverse; as, to travel the continent.
      "I travel this profound." --Milton.
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   2. To force to journey. [R.]
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            They shall not be traveled forth of their own
            franchises.                           --Spenser.
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From The Collaborative International Dictionary of English v.0.48:

Travel \Trav"el\, n.
   1. The act of traveling, or journeying from place to place; a
      journey.
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            With long travel I am stiff and weary. --Shak.
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            His travels ended at his country seat. --Dryden.
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   2. pl. An account, by a traveler, of occurrences and
      observations during a journey; as, a book of travels; --
      often used as the title of a book; as, Travels in Italy.
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   3. (Mach.) The length of stroke of a reciprocating piece; as,
      the travel of a slide valve.
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   4. Labor; parturition; travail. [Obs.]
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From WordNet (r) 2.0:

travel
     n 1: the act of going from one place to another; "he enjoyed
          selling but he hated the travel" [syn: traveling, travelling]
     2: a movement through space that changes the location of
        something [syn: change of location]
     3: self-propelled movement [syn: locomotion]
     v 1: change location; move, travel, or proceed; "How fast does
          your new car go?"; "We travelled from Rome to Naples by
          bus"; "The policemen went from door to door looking for
          the suspect"; "The soldiers moved towards the city in an
          attempt to take it before night fell" [syn: go, move,
           locomote] [ant: stay in place]
     2: undertake a journey or trip [syn: journey]
     3: make a trip for pleasure [syn: trip, jaunt]
     4: travel upon or across; "travel the oceans" [syn: journey]
     5: undergo transportation as in a vehicle; "We travelled North
        on Rte. 508"
     6: travel from place to place, as for the purpose of finding
        work, preaching, or acting as a judge [syn: move around]
     [also: travelling, travelled]

From Moby Thesaurus II by Grady Ward, 1.0:

210 Moby Thesaurus words for "travel":
   advance, advancement, advancing, ascend, associate, back, back up,
   budge, career, change, change place, circle, climb, clip,
   come along, come on, communication, commute, conduction, contagion,
   convection, course, cover, cover ground, cross, delivery,
   deportation, descend, diapedesis, diffusion, dissemination, do,
   ebb, excursions, expedition, expeditions, explore, export,
   exportation, expulsion, extradition, fare, fare forth, fetch, flit,
   flow, forward motion, forwardal, forwarding, fraternize,
   furtherance, furthering, gain ground, gait, gang, gather head,
   gather way, get ahead, get along, get over, globe-trotting, go,
   go ahead, go along, go around, go fast, go forward, go on, go over,
   go round, go sideways, go-ahead, gyrate, hang about, hang around,
   headway, hie, import, importation, interchange, journey,
   journeyings, journeys, junkets, lick, make good time,
   make head against, make headway, make progress,
   make progress against, make strides, make up leeway, march,
   measure, metastasis, metathesis, metempsychosis, migration, mount,
   move, move along, move forward, move on, move over,
   mutual transfer, odyssey, ongoing, onward course, osmosis,
   overpass, pace, pass, pass along, pass on, pass over, pass through,
   passage, passing over, patrol, perambulate, peregrinate,
   peregrinations, pererrate, perfusion, peripatetics, plunge, ply,
   proceed, process, progress, progression, progressiveness,
   promotion, push on, range, range over, rate, reconnoiter, regress,
   repair, retrogress, rise, roam, roll, roll on, rolling, rolling on,
   rotate, rove, run, sashay, scour, scour the country, scout, shift,
   sink, soar, socialize, spin, spread, spreading, stem, step,
   step forward, stir, stream, stride, subside, sweep, tour, touring,
   tourism, tours, track, transduction, transfer,
   transfer of property, transference, transfusion, transit,
   transition, translation, translocation, transmigration,
   transmigration of souls, transmission, transmittal, transmittance,
   transplacement, transplantation, transposal, transposition,
   travel over, travel through, travels, traverse, tread, trek,
   trekking, treks, trip, trips, voyage, voyagings, wanderings, wane,
   way, wayfare, wend, whirl