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1.
1. a midday meal consisting entirely of snack foods
I'm not too hungry so I think I'll just have snunch.
by kayjaybe September 24, 2010
 
2.
Eating food that you shouldn't be/ hiding good food to eat later.

This usually applies to when household share food in a student or shared house situation.

its a combination of the words, sneaky and munch.
Did u have a snunch last night?
Has someone snunched all the food?
Somebodys snunched it!
by IslingwordPT October 19, 2009
 
3.
The most badass meal you can eat between lunch and dinner. You eat it when youre just too damn hungry to eat and you need to knock that dank hunger back into the fiery pits of Tartarus. The resulting happiness puts your day over the top and makes you feel invincible.
"Hey man, do you wanna go eat later?"

"Nah, I just ate an awesome snunch, try again later."
by Sandy the Seacrab April 14, 2014
 
4.
you take your lunch hour to eat your co-worker's snatch
"Hey, we're going to Chipotle. Want to join?"

"Naw dude, I just took my snunch. Tasted Fishy"
by aladygirl September 11, 2013
 
5.
A snack lunch; a snack between lunch and dinner (usually a later dinner); can't have brunch and snunch on the same day
I'm hungry but I just had lunch. I'll have a snunch before dinner.
by SabaScribe April 14, 2014