Source : Webster's Revised Unabridged Dictionary (1913)

Vibrate \Vi"brate\, v. t. [imp. & p. p. {Vibrate}; p. pr. & vb.
   n. {Vibrating}.] [L. vibratus, p. p. of vibrare, v. t. & v.
   i., to snake, 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.

   2. To mark or measure by moving to and fro; as, a pendulum
      vibrating seconds.

   3. To affect with vibratory motion; to set in vibration.

            Breath vocalized, that is, vibrated or undulated,
            may . . . impress a swift, tremulous motion.
                                                  --Holder.

            Star to star vibrates light.          --Tennyson.

Vibrate \Vi"brate\, v. t. [imp. & p. p. {Vibrate}; p. pr. & vb.
   n. {Vibrating}.] [L. vibratus, p. p. of vibrare, v. t. & v.
   i., to snake, 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.

   2. To mark or measure by moving to and fro; as, a pendulum
      vibrating seconds.

   3. To affect with vibratory motion; to set in vibration.

            Breath vocalized, that is, vibrated or undulated,
            may . . . impress a swift, tremulous motion.
                                                  --Holder.

            Star to star vibrates light.          --Tennyson.

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.

   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.

   3. To produce an oscillating or quivering effect of sound;
      as, a whisper vibrates on the ear. --Pope.

   4. To pass from one state to another; to waver; to fluctuate;
      as, a man vibrates between two opinions.

Source : WordNet®

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}]
     3: be undecided about something; waver between conflicting
        positions or courses of action; "He oscillates between
        accepting the new position and retirement" [syn: {hover},
        {vacillate}, {oscillate}]
     4: sound with resonance; "The sound resonates well in this
        theater" [syn: {resonate}]
     5: feel sudden intense sensation or emotion; "he was thrilled
        by the speed and the roar of the engine" [syn: {thrill}, {tickle}]