1) Chew 2) Chew gum and eat bananas 3) Chew up 4) Chomp 5) Crush 6) Gnaw 7) Grind 8) Grind and knead 9) Knead 10) Make easier to swallow 11) Squash 12) To chew 13) Work 1) Chew 2) Gnaw 3) Manducate 
to chew; to knead mechanically
• (v. t.) To grind or crush with, or as with, the teeth and prepare for swallowing and digestion; to chew; as, to masticate food.
To chew your food and mix the food with saliva
To chew food and mix it with saliva.
<dentistry> To chew your food and mix the food with saliva ... (08 Jan 1998) ... 
Mas'ti·cate transitive verb [ imperfect & past participle Masticated ; present participle & verbal noun Masticating .] [ Latin masticatus , past participle of masticare to chew, probably from mastiche mastic. See 
Type: Term Pronunciation: mas′ti-kāt Definitions: 1. To chew; to perform mastication.
Masticate: To chew, grind, or pulverize food (or something else) until it turns to pulp. From the Latin masticare, from the Greek mastikhan meaning to grind the teeth.
[v] - grind and knead
bite and grind with the teeth[Intelligent words] bite and grind with the teeth