Munch

(v. t. & i.) To chew with a grinding, crunching sound, as a beast chews provender; to chew deliberately or in large mouthfuls.

Thesaurus Entries

bite, bolus, champ, chaw, chew, chew the cud, chew up, chomp, chump, crunch, cud, gnash, gnaw, gob, grind, gum, masticate, morsel, mouth, mouthful, mumble, nibble, nip, quid, ruminate, scrunch, snap, swallow