The Collaborative International Dictionary of English v.0.48:

chew \chew\ (ch[udd]), v. t. [imp. & p. p. Chewed (ch[udd]d);
   p. pr. & vb. n. Chewing.] [As ce['o]wan, akin to D. kauwen,
   G. kauen. Cf. Chaw, Jaw.]
   1. To bite and grind with the teeth; to masticate.
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   2. To ruminate mentally; to meditate on.
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            He chews revenge, abjuring his offense. --Prior.
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   To chew the cud, to chew the food over again, as a cow; to
      ruminate; hence, to meditate.
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            Every beast the parteth the hoof, and cleaveth the
            cleft into two claws, and cheweth the cud among the
            beasts, that ye shall eat.            --Deut. xxiv.
                                                  6.
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The Collaborative International Dictionary of English v.0.48:

Chew \Chew\, v. i.
   To perform the action of biting and grinding with the teeth;
   to ruminate; to meditate.
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         old politicians chew wisdom past.        --Pope.
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The Collaborative International Dictionary of English v.0.48:

Chew \Chew\, n.
   That which is chewed; that which is held in the mouth at
   once; a cud. [Law]
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WordNet (r) 3.0 (2006):

chew
    n 1: a wad of something chewable as tobacco [syn: chew,
         chaw, cud, quid, plug, wad]
    2: biting and grinding food in your mouth so it becomes soft
       enough to swallow [syn: chew, chewing, mastication,
       manduction]
    v 1: chew (food); to bite and grind with the teeth; "He jawed
         his bubble gum"; "Chew your food and don't swallow it!";
         "The cows were masticating the grass" [syn: chew,
         masticate, manducate, jaw]

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "chew":
   bawl out, bite, bolus, bullshit, carpet, cavendish, chain-smoke,
   champ, chat, chaw, chew ass, chew out, chew over, chew the cud,
   chew up, chewing tobacco, chomp, chump, consider, consume,
   converse, crunch, crush, cud, cuss out, cut plug, devour, drag,
   draw, eat, eating tobacco, fid, give a going-over,
   give hail Columbia, give hell, give the deuce, give what-for,
   gnash, gnaw, gob, gossip, grind, gum, inhale, inhale snuff,
   jack up, jaw, lambaste, macerate, mash, masticate, morsel, mouth,
   mouthful, mumble, munch, navy, navy plug, nibble, nip, palaver,
   pigtail, ponder, puff, pull, pulp, pulpify, quid, ream, ream ass,
   ream out, rebuke, reprimand, review, revile, ruminate, scold,
   scrunch, sit on, smash, smoke, snap, squash, swallow, take snuff,
   talk, tell off, tobacco juice, tongue-lash, twist, vituperate,
   wig