The Collaborative International Dictionary of English v.0.48:

Shake \Shake\, v. t. [imp. Shook; p. p. Shaken, (Shook,
   obs.); p. pr. & vb. n. Shaking.] [OE. shaken, schaken, AS.
   scacan, sceacan; akin to Icel. & Sw. skaka, OS. skakan, to
   depart, to flee. [root]161. Cf. Shock, v.]
   1. To cause to move with quick or violent vibrations; to move
      rapidly one way and the other; to make to tremble or
      shiver; to agitate.
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            As a fig tree casteth her untimely figs, when she is
            shaken of a mighty wind.              --Rev. vi. 13.
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            Ascend my chariot; guide the rapid wheels
            That shake heaven's basis.            --Milton.
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   2. Fig.: To move from firmness; to weaken the stability of;
      to cause to waver; to impair the resolution of.
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            When his doctrines grew too strong to be shook by
            his enemies, they persecuted his reputation.
                                                  --Atterbury.
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            Thy equal fear that my firm faith and love
            Can by his fraud be shaken or seduced. --Milton.
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   3. (Mus.) To give a tremulous tone to; to trill; as, to shake
      a note in music.
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   4. To move or remove by agitating; to throw off by a jolting
      or vibrating motion; to rid one's self of; -- generally
      with an adverb, as off, out, etc.; as, to shake fruit down
      from a tree.
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            Shake off the golden slumber of repose. --Shak.
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            'Tis our fast intent
            To shake all cares and business from our age.
                                                  --Shak.
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            I could scarcely shake him out of my company.
                                                  --Bunyan.
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   To shake a cask (Naut.), to knock a cask to pieces and pack
      the staves.

   To shake hands, to perform the customary act of civility by
      clasping and moving hands, as an expression of greeting,
      farewell, good will, agreement, etc.

   To shake out a reef (Naut.), to untile the reef points and
      spread more canvas.

   To shake the bells. See under Bell.

   To shake the sails (Naut.), to luff up in the wind, causing
      the sails to shiver. --Ham. Nav. Encyc.
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WordNet (r) 3.0 (2006):

shaking
    n 1: the act of causing something to move up and down (or back
         and forth) with quick movements
    2: a shaky motion; "the shaking of his fingers as he lit his
       pipe" [syn: shaking, shakiness, trembling, quiver,
       quivering, vibration, palpitation]

Moby Thesaurus II by Grady Ward, 1.0:

115 Moby Thesaurus words for "shaking":
   agitated, ague, all shook up, all-overish, aquiver, aspen, blurred,
   brandish, brandishing, breathy, bumpiness, chattering, choked,
   choking, chorea, cold shivers, croaking, didder, disquiet,
   disquietude, dithers, drawling, drawly, dysphonic, fidgetiness,
   fidgeting, fidgets, fidgety, fits and starts, flaunt, flaunting,
   flourish, flourishing, flutter, fluttery, guttural, harsh, hawking,
   heaving, hoarse, in a quiver, inarticulate, indistinct, inquietude,
   jactation, jactitation, jerkiness, jittery, joltiness, jumpy,
   lisping, mispronounced, muzzy, nasal, palpitation, palsied, palsy,
   panting, pitapat, pitter-patter, quaking, quaver, quavering,
   quavery, quiver, quivering, quivery, restlessness, shakes, shaky,
   shiver, shivering, shivers, shivery, shook up, shudder, shuddering,
   skittery, snuffling, spasms, stifled, strangled, succussatory,
   succussion, succussive, thick, throaty, throb, throbbing,
   tottering, tremble, trembling, trembly, tremor, tremulant,
   tremulous, tremulousness, trepidation, trepidity, twangy, twitchy,
   twitter, twittery, undulation, unrest, unsettled, unstable,
   unsteady, velar, vibrating, vibration, wave, wave motion, waving,
   wobbly