Chew

1. n. That which is chewed; that which is held in the mouth at once; a cud.
2. v. t. To bite and grind with the teeth; to masticate.
3. v. t. To ruminate mentally; to meditate on.
4. v. i. To perform the action of biting and grinding with the teeth; to ruminate; to meditate.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.