The Collaborative International Dictionary of English v.0.48:

Snatch \Snatch\, v. t. [imp. & p. p. Snatched; p. pr. & vb. n.
   Snatching.] [OE. snachen, snechen; akin to D. snakken to
   gasp, to long (for), to desire. Cf. Snack, n., Sneck.]
   1. To take or seize hastily, abruptly, or without permission
      or ceremony; as, to snatch a loaf or a kiss.
      [1913 Webster]

            When half our knowledge we must snatch, not take.
                                                  --Pope.
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   2. To seize and transport away; to rap. "Snatch me to
      heaven." --Thomson.
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   Syn: To twitch; pluck; grab; catch; grasp; gripe.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Snatch \Snatch\, v. i.
   To attempt to seize something suddenly; to catch; -- often
   with at; as, to snatch at a rope.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Snatch \Snatch\, n.
   1. A hasty catching or seizing; a grab; a catching at, or
      attempt to seize, suddenly.
      [1913 Webster]

   2. A short period of vigorous action; as, a snatch at weeding
      after a shower. --Tusser.
      [1913 Webster]

            They move by fits and snatches.       --Bp. Wilkins.
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   3. A small piece, fragment, or quantity; a broken part; a
      scrap.
      [1913 Webster]

            We have often little snatches of sunshine.
                                                  --Spectator.
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            Leave me your snatches, and yield me a direct
            answer.                               --Shak.
      [1913 Webster]

WordNet (r) 3.0 (2006):

snatch
    n 1: a small fragment; "overheard snatches of their
         conversation" [syn: snatch, bit]
    2: obscene terms for female genitals [syn: cunt, puss,
       pussy, slit, snatch, twat]
    3: (law) the unlawful act of capturing and carrying away a
       person against their will and holding them in false
       imprisonment [syn: kidnapping, snatch]
    4: a weightlift in which the barbell is lifted overhead in one
       rapid motion
    5: the act of catching an object with the hands; "Mays made the
       catch with his back to the plate"; "he made a grab for the
       ball before it landed"; "Martin's snatch at the bridle failed
       and the horse raced away"; "the infielder's snap and throw
       was a single motion" [syn: catch, grab, snatch, snap]
    v 1: to grasp hastily or eagerly; "Before I could stop him the
         dog snatched the ham bone" [syn: snatch, snatch up,
         snap]
    2: to make grasping motions; "the cat snatched at the
       butterflies"
    3: take away to an undisclosed location against their will and
       usually in order to extract a ransom; "The industrialist's
       son was kidnapped" [syn: kidnap, nobble, abduct,
       snatch]

Moby Thesaurus II by Grady Ward, 1.0:

177 Moby Thesaurus words for "snatch":
   abduce, abduct, abduction, abstract, and, annex, apprehension,
   appropriate, arrest, arrestation, badger, bag, bit, blackmail, bob,
   boost, borrow, butt, capture, carry away, carry off, catch,
   catching, chip, chunk, clasp, clip, clipping, clutch, collaring,
   collop, cop, coup, crib, crimp, crumb, cut, cutting, defraud,
   deliver, desire, dollop, dragnet, embezzle, end, exact, extort,
   filch, flick, flip, flirt, flounce, force from, forcible seizure,
   fragment, get, gob, gobbet, grab, grab at, grabbing, grapple,
   grasp, hitch, hold, hold for ransom, hook, hunk, impress, jerk,
   jig, jigger, jigget, jiggle, jog, joggle, jump at, kidnap,
   kidnapping, lay hold of, levy blackmail, lift, lump, make off with,
   modicum, moiety, morsel, nab, nabbing, nail, nip, nip up, palm,
   paring, particle, picking up, piece, pilfer, pinch, pluck, poach,
   power grab, prehension, pry loose from, purloin, rasher, remove,
   rend, rend from, rescue, rip, rip from, run away with, running in,
   rustle, sample, save, scoop, scrap, screw, scrounge, segment,
   seize, seizure, seizure of power, shake down, shanghai, shard,
   shaving, shiver, shoplift, shred, skyjack, slice, sliver,
   smithereen, snack, snake, snap up, snare, snatch at, snatch from,
   snatching, snip, snippet, snitch, specimen, spirit away, splinter,
   squeeze, start, steal, stitch, stump, sudden pull, swindle, swipe,
   take, take hold of, taking in, taking into custody, tatter,
   tear from, thieve, throttle, tweak, twitch, walk off with, whip up,
   win, wrench, wrench from, wrest, wring, wring from, yank, yerk