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1.
A combination of the words munch and mosh. To eat with extreme intensity. Usu. not a real meal.
I haven't eaten all day. I'm about to go home and monch on something in my fridge.
by RapGodTHoR January 05, 2010
 
2.
Verb

To eat with extreme pleasure. Often occurs as a result of THC or Alcohol intoxication; the best cure for the munchies.

monch monching moncher
Middle English monchen.
Yo man after all that squeef (marijuana) I need to be straight monching, let's order some Chinese.
by A-More October 16, 2005
 
3.
The disgusting noise made by chewing with ones mouth open.
Dude, quite your monching.
by Luke McCarthy September 22, 2008