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Webster 1913 Edition

Verb.

To chew loudly and greedily; to champ.

[Prov. Eng. & Colloq. U. S.]

Halliwell.

chomp ‎(plural chomps)

chomp ‎(third-person singular simple present chomps, present participle chomping, simple past and past participle chomped)

(intransitive) To bite or chew loudly or heavily.
The dog chomped the treat and swallowed it in one gulp.
(computing, transitive, Perl) To remove the final character from (a text string) if it is a newline (or, less commonly, some other programmer-specified character).

to bite or munch loudly or heavily