The Collaborative International Dictionary of English v.0.48:

Hike \Hike\, v. t. [imp. & p. p. Hiked; p. pr. & vb. n.
   Hiking.] [Cf. Hitch.]
   1. To move with a swing, toss, throw, jerk, or the like.
      [Dial. or Colloq.]
      [Webster 1913 Suppl.]

   2. To raise with a quick movement.
      [PJC]

   3. To raise (a price) quickly or significantly in a single
      step. They hiked gasoline prices twenty cents in less than
      a week.
      [PJC]

   4. (Football) To pass (the ball) from the center to the
      quarterback at the start of the play; to snap (the
      ball).
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Hike \Hike\, v. i.
   1. To hike one's self; specif., to go with exertion or
      effort; to tramp; to march laboriously. [Dial. or Colloq.]
      "If you persist in heaving and hiking like this."
      --Kipling.

            It's hike, hike, hike (march) till you stick in the
            mud, and then you hike back again a little slower
            than you went.                        --Scribner's
                                                  Mag.
      [Webster 1913 Suppl.]

   2. to take a long walk, especially for pleasure or exercise.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Hike \Hike\, n.
   1. The act of hiking.
      [Webster 1913 Suppl.]

   2. A long walk usually for exercise or pleasure or exercise;
      a tramp; a march. [WordNet sense 1]
      [PJC]

            With every hike there's a few laid out with their
            hands crossed.                        --Scribner's
                                                  Mag.
      [Webster 1913 Suppl.]

   3. an increase in cost, rate, etc.; as, there was a dramatic
      hike in gasoline prices; a hike in the interest rates.
      [WordNet sense 2]

   Syn: rise, boost.
        [WordNet 1.5]

   4. Hence: the amount a salary is increased; as, he got a wage
      hike. [WordNet sense 3]

   Syn: raise, rise.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

hike
    n 1: a long walk usually for exercise or pleasure; "she enjoys a
         hike in her spare time" [syn: hike, hiking, tramp]
    2: an increase in cost; "they asked for a 10% rise in rates"
       [syn: rise, boost, hike, cost increase]
    3: the amount a salary is increased; "he got a 3% raise"; "he
       got a wage hike" [syn: raise, rise, wage hike, hike,
       wage increase, salary increase]
    v 1: increase; "The landlord hiked up the rents" [syn: hike,
         hike up, boost]
    2: walk a long way, as for pleasure or physical exercise; "We
       were hiking in Colorado"; "hike the Rockies"

Moby Thesaurus II by Grady Ward, 1.0:

170 Moby Thesaurus words for "hike":
   access, accession, accretion, accrual, accruement, accumulation,
   add to, addition, advance, aggrandize, aggrandizement, airing,
   amble, amplification, amplify, appreciation, ascent, augment,
   augmentation, backpack, ballooning, bloat, bloating, blow up, boom,
   boost, broaden, broadening, build, build up, buildup, bulk,
   bulk out, buoy up, cast up, constitutional, crescendo, defile,
   develop, development, dilate, distend, edema, elevate, elevation,
   enlarge, enlargement, erect, escalate, exalt, expand, expansion,
   explore, extend, extension, fatten, file, file off, fill out,
   flood, footslog, forced march, gain, glee, go on parade,
   goose-step, greatening, growth, gush, heave, heft, heighten, heist,
   hike up, hoick, hoist, hold up, huff, increase, increment, inflate,
   inflation, jack up, jaunt, jerk up, jocularity, jocundity, jollity,
   joviality, jump, jump up, knock up, leap, lengthen, levitate, lift,
   lift up, lob, loft, magnify, march, maximize, merriment, mounting,
   multiplication, mush, parade, parlay, peripatetic journey,
   peripateticism, perk up, productiveness, proliferation, promenade,
   puff, puff up, pump, pump up, put up, pyramid, raise, raise up,
   ramble, rarefy, rear, rear up, rise, rove, saunter, schlep, set up,
   sky, snowballing, spread, stick up, stretch, stroll, sufflate,
   surge, swell, swelling, thicken, throw up, traipse, tramp, trudge,
   tumescence, turn, up, upbuoy, upcast, upheave, uphoist, uphold,
   uplift, upping, upraise, uprear, upsurge, upswing, upthrow,
   uptrend, upturn, walk, walkabout, walking tour, wander, waxing,
   widen, widening