to chew with steady or vigorous working of the jaws, often audibly.

to chew steadily or vigorously, often audibly.

Informal . a snack. ?

munch out, Slang . to snack esp. extensively or frequently.

verb

bite , break up , champ , chomp , crunch , crush , grind , mash , masticate , press , reduce , ruminate , scrunch , smash , soften , chump , crump , chew , craunch , eat