verb

• (often with "on") To chew with a grinding, crunching sound, and with the mouth closed.
  "Jim was munching on a biscotti."

noun

• (countable, colloquial) A location or restaurant where good food can be expected, or an instance of eating at such a place.
  "Sally is having a breakfast munch at her place!"
• (countable, colloquial) An act of eating.
  "We had a good munch at the chippy."
• (uncountable, slang) Food.
  "So once we had a shower with what only I can describe as a fitted garden hose with a broken head, ventured out to get some munch. We found a little restaurant, sat down and pretty much got told what we was ^([sic]) having."
• (countable, BDSM) A casual meeting for those interested in BDSM, usually at a restaurant, bar or pub.
  "And thanks to the stunning paxie for getting it all together and creating the best munch ever in the history of munches. :)"