Source : Webster's Revised Unabridged Dictionary (1913)

Masticate \Mas"ti*cate\, v. t. [imp. & p. p. {Masticated}; p.
   pr. & vb. n. {Masticating}.] [L. masticatus, p. p. of
   masticare to chew, prob. fr. mastiche mastic. See {Mastic}.]
   To grind or crush with, or as with, the teeth and prepare for
   swallowing and digestion; to chew; as, to masticate food.

Source : WordNet®

masticate
     v 1: grind and knead; "masticate rubber"
     2: chew (food); "He jawed his bubble gum"; "Chew your food and
        don't swallow it!"; "The cows were masticating the grass"
        [syn: {chew}, {manducate}, {jaw}]