What is "munched"

Munch \Munch\, v. t. & i. [imp. & p. p. Munched; p. pr. & vb. n. Munching.] [Prob. akin to mumble: cf. also F. manger to eat (cf. Mange), and m[^a]cher to cher (cf. Masticate). See Mumble.] To chew with a grinding, crunching sound, as a beast chews provender; to chew deliberately or in large mouthfuls.

I could munch your good dry oats.
--Shak.

vb. (en-past of: munch)