What is the meaning of Munch?

To chew with a grinding, crunching sound, and with the mouth closed.

To eat vigorously or with excitement.

A location or restaurant where good food can be expected, or an instance of eating at such a place.

An act of eating.

Food.

A casual meeting for those interested in BDSM, usually at a restaurant, bar or pub.

(This is a hot sense, kept provisionally) Someone who easily agrees to give oral sex

many

Source: wiktionary.org