bite, morsel, bit - a small amount of solid food; a mouthful; "all they had left was a bit of bread"

change of state - the act of changing something into something different in essential characteristics

chomping - the act of chewing noisily

gumming, mumbling - ineffectual chewing (as if without teeth)

rumination - (of ruminants) chewing (the cud); "ruminants have remarkable powers of rumination"

eating, feeding - the act of consuming food

chomp, champ - chew noisily; "The boy chomped his sandwich"

champ - chafe at the bit, like horses

gum, mumble - grind with the gums; chew without teeth and with great difficulty; "the old man had no teeth left and mumbled his food"

chaw - chew without swallowing; "chawtobacco"

munch, crunch - chew noisily; "The children crunched the celery sticks"

grind, grate - make a grating or grinding sound by rubbing together; "grate one's teeth in anger"

gnaw - bite or chew on with the teeth; "gnaw an old cracker"; "chewed on a cookie"