The Collaborative International Dictionary of English v.0.48:

Vibrate \Vi"brate\, v. t. [imp. & p. p. Vibrated; p. pr. & vb.
   n. Vibrating.] [L. vibratus, p. p. of vibrare, v. t. & v.
   i., to shake, brandish, vibrate; akin to Skr. vip to tremble,
   Icel. veifa to wave, vibrate. See Waive and cf. Whip, v.
   t.]
   1. To brandish; to move to and fro; to swing; as, to vibrate
      a sword or a staff.
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   2. To mark or measure by moving to and fro; as, a pendulum
      vibrating seconds.
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   3. To affect with vibratory motion; to set in vibration.
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            Breath vocalized, that is, vibrated or undulated,
            may . . . impress a swift, tremulous motion.
                                                  --Holder.
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            Star to star vibrates light.          --Tennyson.
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The Collaborative International Dictionary of English v.0.48:

Vibrate \Vi"brate\, v. i.
   1. To move to and fro, or from side to side, as a pendulum,
      an elastic rod, or a stretched string, when disturbed from
      its position of rest; to swing; to oscillate.
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   2. To have the constituent particles move to and fro, with
      alternate compression and dilation of parts, as the air,
      or any elastic body; to quiver.
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   3. To produce an oscillating or quivering effect of sound;
      as, a whisper vibrates on the ear. --Pope.
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   4. To pass from one state to another; to waver; to fluctuate;
      as, a man vibrates between two opinions.
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WordNet (r) 3.0 (2006):

vibrate
    v 1: shake, quiver, or throb; move back and forth rapidly,
         usually in an uncontrolled manner
    2: move or swing from side to side regularly; "the needle on the
       meter was oscillating" [syn: oscillate, vibrate]
    3: be undecided about something; waver between conflicting
       positions or courses of action; "He oscillates between
       accepting the new position and retirement" [syn: hover,
       vibrate, vacillate, oscillate]
    4: sound with resonance; "The sound resonates well in this
       theater" [syn: resonate, vibrate]
    5: feel sudden intense sensation or emotion; "he was thrilled by
       the speed and the roar of the engine" [syn: thrill,
       tickle, vibrate]

Moby Thesaurus II by Grady Ward, 1.0:

59 Moby Thesaurus words for "vibrate":
   bob, bobble, bounce, bump, careen, chatter, coggle, continue,
   dangle, didder, falter, fluctuate, flutter, have an ague, hustle,
   jactitate, jar, jog, joggle, jolt, jostle, jounce, jump, librate,
   lurch, nutate, occur often, oscillate, pendulate, pitch, pulsate,
   pulse, quake, quaver, quiver, recur, reel, resonate, reverberate,
   rock, roll, shake, shiver, shock, shudder, swag, sway, swing,
   throb, toss, tremble, tremor, twitter, vacillate, wag, waggle,
   wave, waver, wobble