Source : Webster's Revised Unabridged Dictionary (1913)

Chew \Chew\, v. i.
   To perform the action of biting and grinding with the teeth;
   to ruminate; to meditate.

         old politicians chew wisdom past.        --Pope.

Chew \Chew\, n.
   That which is chewed; that which is held in the mouth at
   once; a cud. [Law]

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.

   2. To ruminate mentally; to meditate on.

            He chews revenge, abjuring his offense. --Prior.

   {To chew the cud}, to chew the food ocer again, as a cow; to
      ruminate; hence, to meditate.

            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.

Source : WordNet®

chew
     n 1: a wad of something chewable as tobacco [syn: {chaw}, {cud},
          {quid}, {plug}, {wad}]
     2: biting and grinding food in your mouth so it becomes soft
        enough to swallow [syn: {chewing}, {mastication}, {manduction}]

chew
     v : chew (food); "He jawed his bubble gum"; "Chew your food and
         don't swallow it!"; "The cows were masticating the grass"
         [syn: {masticate}, {manducate}, {jaw}]