To bite and grind with the teeth
"He's a vegetarian," remarked the Tiger, as the horse began to munch the clover.
Philip P. Munch, Kobstadstyrelsen i Danmark (Copenhagen, 1900); Peter Edvard Holm, Danmark Norges indre Historic, 1660-1720 (Copenhagen, 1885-1886); ib.
Munch, and the Romanic, e.g.
Munch, Maria von Burgund, nebst d.
Any other time she probably would have let him grab a mouthful to munch on his way down, but the storm was getting closer faster than she anticipated.