adverb, adverb taking the 'to' particle
bite or gulp emphatically; chew vigorously
Mimetic adverb describing a forceful, vigorous biting, gulping, or chewing action. Often used with と and verbs like 噛む, 飲む, or 食べる.
The dog bit into the big bone with a chomp.
He took a big bite of the hamburger and ate it in one gulp.
The dog sank its teeth into the bone with a big bite.
He gulped down the beer in one big swallow.
I got badly bitten by a shark.